WO2018066685A1 - Touch panel and touch panel system - Google Patents

Touch panel and touch panel system Download PDF

Info

Publication number
WO2018066685A1
WO2018066685A1 PCT/JP2017/036425 JP2017036425W WO2018066685A1 WO 2018066685 A1 WO2018066685 A1 WO 2018066685A1 JP 2017036425 W JP2017036425 W JP 2017036425W WO 2018066685 A1 WO2018066685 A1 WO 2018066685A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch panel
touch
proximity
drive
coil
Prior art date
Application number
PCT/JP2017/036425
Other languages
French (fr)
Japanese (ja)
Inventor
ジョン ムジラネザ
諒 米林
美穂 山田
知洋 木村
杉田　靖博
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN201780062041.5A priority Critical patent/CN109791459B/en
Priority to US16/339,009 priority patent/US10795522B2/en
Publication of WO2018066685A1 publication Critical patent/WO2018066685A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04114—Touch screens adapted for alternating or simultaneous interaction with active pens and passive pointing devices like fingers or passive pens

Definitions

  • the present invention relates to a touch panel and a touch panel system capable of detecting a touch position and detecting proximity of a coil.
  • Patent Document 1 A display device capable of detecting the proximity of a coil is known as a prior art (Patent Document 1).
  • a wire grid induction layer is incorporated behind the display screen.
  • the wire grating of the induction layer consists of a wire formed along the X-axis direction and a wire formed along the Y-axis direction, and constitutes an electromagnetic induction antenna array to recognize the proximity of induction elements such as coils. To do.
  • This invention is made
  • the objective is to implement
  • a touch panel includes a plurality of drive electrodes formed in a drive layer along a first direction, and the second direction intersecting the drive electrodes.
  • a touch panel including a drive layer and a plurality of touch sense electrodes formed on an insulated sense layer, wherein a proximity sense electrode for detecting proximity of a coil is formed on the sense layer.
  • a touch panel system is a touch panel system including the touch panel according to an aspect of the present invention and a controller that controls the touch panel.
  • a drive voltage is applied to each of the plurality of drive electrodes, and each of the plurality of drive electrodes in a coil detection period for detecting the proximity of the coil.
  • a drive circuit for applying a coil detection voltage to the read circuit, and, during the touch detection period, linear sum signals derived from the charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes are read along the plurality of touch sense electrodes.
  • a linear sum signal derived from the charges of a plurality of capacitors based on a coil detection voltage applied to the moving electrode, and an influence due to a change in a combined charge between the proximity sense electrode and the touch sense electrode due to the proximity of the coil Receiving a linear sum signal along a plurality of touch sense electrodes to detect proximity of the coil, receiving a signal based on a resonance frequency of the coil from the proximity sense electrode, and receiving the signal
  • the apparatus further includes a frequency modulator that modulates the frequency and supplies the RFID transceiver to the controller.
  • (A) is a front view which shows the structure of the touchscreen which concerns on Embodiment 1
  • (b) is sectional drawing along surface AA shown by (a). It is a schematic diagram for demonstrating operation
  • FIG. 4 is a timing chart for explaining operations of the proximity sense electrode and the drive layer proximity sense electrode.
  • movement of the said touchscreen system It is a front view which shows the structure of the touchscreen which concerns on Embodiment 2.
  • FIG. It is a schematic diagram which shows the touchscreen system provided with the said touchscreen. It is a front view which shows the structure of the touchscreen which concerns on Embodiment 3.
  • FIG. 1 is a schematic diagram for demonstrating operation
  • FIG. 4 is a timing chart for explaining operations of the proximity sense electrode and the drive layer proximity sense electrode.
  • movement of the said touchscreen system It is a front view which shows the structure of the touchscreen which concerns on Embodiment 2.
  • FIG. It is a schematic diagram which shows the touchscreen system provided with the said touchscreen. It is a front view which shows the structure of the touchscreen which concerns on Embodiment 3.
  • FIG. 10 is a schematic diagram illustrating a touch panel system according to a fifth embodiment.
  • FIG. 10 is a schematic diagram illustrating a touch panel system according to a sixth embodiment. It is a schematic diagram which shows the touchscreen system which concerns on Embodiment 7.
  • FIG. It is sectional drawing of the liquid crystal display panel with which the touchscreen which concerns on Embodiment 8 was incorporated.
  • FIG. 1A is a front view illustrating a configuration of the touch panel 1 according to the first embodiment
  • FIG. 1B is a cross-sectional view taken along a plane AA illustrated in FIG.
  • the touch panel 1 includes a drive layer 2, a sense layer 3, and an insulating layer 11 formed between the drive layer 2 and the sense layer 3.
  • the touch panel 1 includes a plurality of drive electrodes 4 formed in parallel to the drive layer 2 along the X direction (first direction), and the Y direction (first direction).
  • a plurality of touch sense electrodes 5 formed in parallel to the sense layer 3 along two directions), and a plurality of capacitors (not shown) formed between the plurality of drive electrodes 4 and the plurality of touch sense electrodes 5, respectively. ).
  • FIG. 2 shows an example in which the touch sense electrode 5 is formed in a direction orthogonal to the drive electrode 4, the present invention is not limited to this, and the touch sense electrode 5 is formed in a direction crossing the drive electrode 4. It only has to be.
  • a drive voltage is applied to each of the plurality of drive electrodes 4. Then, linear sum signals derived from the capacitances of the plurality of capacitors based on the drive voltage applied to the drive electrode 4 are read out along the plurality of touch sense electrodes 5. Next, the touch position is detected based on the linear sum signal read along the plurality of touch sense electrodes 5.
  • a plurality of proximity sense electrodes 7 for detecting the proximity of the coil 10 attached to the finger 13 are formed on the sense layer 3.
  • Each proximity sense electrode 7 is arranged in a U shape so as to surround the touch sense electrode 5. In this way, the plurality of proximity sense electrodes 7 are respectively arranged at positions corresponding to the touch sense electrodes 5.
  • the proximity sense electrode 7 is formed so as to have the resonance frequency of the coil 10.
  • a resonance frequency capacitor 8 connected to one end and the other end of the proximity sense electrode 7 is provided.
  • the resonance frequency capacitor 8 is preferably disposed in the sense layer 3, but may be disposed in a place other than the sense layer 3, for example, in the drive layer 2.
  • the proximity sense electrode 7 is preferably made of transparent ITO (Indium Tin Oxide).
  • the capacitive touch panel is a general user interface in electronic devices such as smartphones, tablet PCs, and other portable media that are applied to various touch applications (software). Touch panels are also commonly used in other electronic devices such as vending machines and household appliances. In recent years, Internet ⁇ ⁇ ⁇ of Things, to which different devices are connected, has become widespread, and soon the device itself needs to be connected through a touch panel.
  • a conventional capacitive touch panel can only detect a touch.
  • a conventional capacitive touch panel cannot identify the type of an object touched. That is, the conventional capacitive touch panel cannot identify whether the touched object is a metal, a human finger, or another device. For example, when two users A and B touch the display, the conventional touch panel cannot identify whether the touched finger belongs to user A or user B.
  • a group of a pair of sense electrodes is arranged in the sense layer 3.
  • One of the pair of sense electrodes electrically forms a loop or an LC circuit.
  • the proximity sense electrode 7 forming the electrical loop is preferably formed so as to wrap around the other of the pair of sense electrodes (touch sense electrode 5 (inner electrode)).
  • the proximity sense electrode 7 that forms an electrical loop resonates at a frequency higher than the frequency of the touch panel (for example, the RF frequency), and enables RFID (Radio Frequency IDenter) coupling or sweep frequency detection identification.
  • the high frequency signal is modulated by a touch panel signal.
  • FIG. 2 is a schematic diagram for explaining the operation of the proximity sense electrode 7 provided on the touch panel 1.
  • FIG. 3 is a schematic diagram for explaining the operation of the proximity sense electrode 7 and the touch sense electrode 5 provided on the touch panel 1.
  • the magnetic flux in the proximity sense electrode 7 changes.
  • an induced electromotive force is generated.
  • This causes a change in the combined charge in the proximity sense electrode 7.
  • a change in coupling charge ⁇ Q c between the proximity sense electrode 7 and the touch sense electrode 5 is detected by a touch panel controller that controls the touch panel 1. Therefore, the position on the touch panel 1 of the RFID device 9 accompanied with the high frequency radiation is detected, and the RFID device 9 and the user thereof are easily identified.
  • the signal for identifying the user is generated by using the touch panel controller.
  • the RFID device 9 having the coil 10 approaches the touch panel 1
  • mutual inductance is generated between the RFID device 9 and the proximity sense electrode 7. Due to the change in the induced current, the charge flowing from the proximity sense electrode 7 to the touch sense electrode 5 changes. Resonance occurs in the proximity sense electrode 7 that forms an electrical loop, and a coupling capacitance change ⁇ Q c is induced between the proximity sense electrode 7 and the touch sense electrode 5.
  • the loop shape of the proximity sense electrode 7 increases its inductance.
  • the proximity sense electrode 7 is further coupled to the capacitance so as to match a predetermined resonance frequency.
  • the outer proximity sense electrode 7 is coupled to the inner touch sense electrode 5 through a given capacitance. Due to the change of the induced current in the loop-shaped proximity sense electrode 7, the flow of current and charge in the inner touch sense electrode 5 changes. Thereby, the proximity of the coil 10 is detected.
  • FIG. 4 is a schematic diagram showing the touch panel system 14 provided with the touch panel 1.
  • FIG. 5 is a timing chart for explaining the operation of the touch panel system 14.
  • FIG. 6 is a schematic diagram for explaining input / output signals of the touch panel 1.
  • the touch panel system 14 includes a touch panel 1 and a touch panel controller 17 (controller) that controls the touch panel 1.
  • the touch panel controller 17 applies a drive voltage signal S1 (drive voltage) to each of the plurality of drive electrodes 4 and detects the proximity of the RFID device 9 in the touch detection period T1 for detecting a touch on the touch panel 1.
  • a drive circuit 17a for applying a touch panel transmitter signal (Tx) S2 (coil detection voltage) to each of the plurality of drive electrodes 4 is provided.
  • the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5 in the touch detection period T1.
  • the proximity of the RFID device 9 is read by reading out the linear sum signal S6 affected by the change in the coupling charge with the proximity sense electrode 7 through which the proximity sense electrode signal S4 flows due to the proximity of 9 along the plurality of touch sense electrodes 5. It has a detection circuit 17b for detection.
  • the touch panel system 14 is provided with an amplifier 15 connected to each touch sense electrode 5.
  • Each amplifier 15 is provided with an integrating capacitor 16.
  • the amplifier 15 amplifies the linear sum signal S5 read along the touch sense electrode 5 and supplies the amplified signal to the detection circuit 17b.
  • the amplifier 15 amplifies the linear sum signal S6 read along the touch sense electrode 5 and supplies the amplified signal to the detection circuit 17b.
  • the touch panel system 14 includes a frequency modulator 18 and an RFID transmitter 23.
  • the frequency modulator 18 generates a modulation signal obtained by superimposing the RFID signal received from the RFID transmitter 23 on the rectangular drive signal received from the touch panel controller 17 and supplies the modulation signal to the proximity sense electrode 7.
  • the touch panel system 14 configured as described above operates as follows.
  • the coil 10 of the RFID device 9 approaches the proximity sense electrode 7 of the touch panel 1 while radiating the coil signal S3.
  • the drive circuit 17a of the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4.
  • the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 is read and amplified by the amplifier 15 along the plurality of touch sense electrodes 5, and the touch panel controller 17 This is supplied to the detection circuit 17b.
  • the detection circuit 17b detects the touch position of the touch target on the touch panel 1 based on the linear sum signal S5 supplied from the amplifier 15.
  • the drive circuit 17a applies the touch panel transmitter signal S2 to each of the plurality of drive electrodes 4.
  • a linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4, and the proximity sense electrode signal S4 flows due to the proximity of the touch sense electrode 5 and the RFID device 9.
  • the amplifier 15 reads and amplifies the linear sum signal S6 affected by the change in the coupling charge with the proximity sense electrode 7 along the plurality of touch sense electrodes 5, and supplies the amplified signal to the detection circuit 17b of the touch panel controller 17.
  • the detection circuit 17b detects the proximity of the RFID device 9 to the touch panel 1 and the position of the adjacent RFID device 9 on the touch panel 1 based on the linear sum signal S6 supplied from the amplifier 15.
  • the touch panel controller 17 detects the proximity of the RFID device 9 to the touch panel 1 and the position of the close RFID device 9 on the touch panel 1.
  • FIG. 7A is a schematic diagram for explaining the operation of the proximity sense electrode 7 disposed so as to surround the touch sense electrode 5 provided on the touch panel 1
  • FIG. 7B is a drive provided on the touch panel 1.
  • FIG. 6 is a schematic diagram for explaining the operation of the drive layer proximity sense electrode 19 disposed so as to surround the electrode 4.
  • FIG. 8 is a timing chart for explaining the operation of the proximity sense electrode 7 and the drive layer proximity sense electrode 19.
  • FIG. 9 is a schematic diagram for explaining the operation of the touch panel system 14.
  • the proximity sense electrode 7 arranged in a U shape so as to surround the touch sense electrode 5 is connected to the frequency modulator 18.
  • the frequency modulator 18 is connected to the RFID transmitter 23 and the touch panel controller 17.
  • the touch panel controller 17 has a drive circuit 17a that applies the drive voltage signal S1 to the drive electrode 4 in the touch detection period T1 and applies the touch panel transmitter signal S2 to the drive electrode 4 in the RFID device detection period T2.
  • the touch panel controller 17 also reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the touch sense electrode 5, and touches the touch position.
  • a linear sum signal S 6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S 2 applied to the drive electrode 4 and the proximity sense electrode due to the proximity of the RFID device 9 RFID device based on the linear sum signal S6 supplied from the amplifier 15 that reads out and amplifies the linear sum signal S6 affected by the change in the combined charge between the touch sense electrode 5 and the touch sense electrode 5 along the touch sense electrode 5.
  • 9 has a detection circuit 17b for detecting the proximity of 9.
  • the RFID transmitter 23 in the RFID device detection period T2, the RFID transmitter 23 generates an RFID signal S7 of megahertz order and supplies it to the frequency modulator 18.
  • the touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18.
  • the frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
  • the drive layer proximity sense electrode 19 disposed in a U shape so as to surround the drive electrode 4 is connected to the frequency modulator 18.
  • the frequency modulator 18 is connected to the RFID transmitter 23 and the touch panel controller 17.
  • the touch panel controller 17 includes the drive circuit 17a and the detection circuit 17b.
  • the frequency modulator 18 generates a modulation signal S9 in which the drive signal S8 supplied from the touch panel controller 17 is superimposed on the RFID signal S7 supplied from the RFID transmitter 23.
  • the drive layer proximity sense electrode 19 is supplied.
  • the proximity sense electrode 7 arranged in a U shape so as to surround the touch sense electrode 5 is connected to the frequency modulator 18.
  • the frequency modulator 18 is connected to the RFID transceiver 22 and the touch panel controller 17.
  • the touch panel controller 17 includes the drive circuit 17a and the detection circuit 17b.
  • the drive circuit 17a of the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4 in the RFID device detection period T2.
  • the RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18.
  • the touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18.
  • the frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
  • FIG. 10 is a front view showing the configuration of the touch panel 1a according to the second embodiment.
  • a plurality of drive layer proximity sense electrodes 19 having the resonance frequency of the coil 10 may be formed in the drive layer 2 in a U shape so as to surround each drive electrode 4.
  • a resonance frequency capacitor 12 connected to one end and the other end of the drive layer proximity sense electrode 19 is provided.
  • the resonance frequency capacitor 12 corresponding to the odd-numbered drive layer proximity sense electrode 19 from the top is arranged at the right end, and the resonance frequency capacitor 12 corresponding to the even-number drive layer proximity sense electrode 19 is at the left end. Be placed.
  • the plurality of drive layer proximity sense electrodes 19 are respectively arranged at positions corresponding to the drive electrodes 4.
  • a plurality of proximity sense electrodes 7 are arranged at positions corresponding to the touch sense electrodes 5, respectively, so that the position in the X direction on the touch panel 1a of the stylus pen 21 which is the close RFID device 9 is detected.
  • a plurality of drive layer proximity sense electrodes 19 are arranged at positions corresponding to the drive electrodes 4, whereby the position of the stylus pen 21 in the Y direction is detected.
  • the stylus pen 21 has a coil 10 associated with NFC.
  • FIG. 11 is a schematic diagram showing the touch panel system 14 provided with the touch panel 1.
  • the touch panel 1 detects a finger 13 wearing a ring 14a having an NFC (Near Field Communication) function and a stylus pen 21 having an NFC function.
  • Ring 14a generates an encoded RFID device coil signal S10.
  • the stylus pen 21 generates an encoded RFID device coil signal S11.
  • the touch panel system 14 applies a drive voltage to the plurality of drive electrodes 4 and reads a linear sum signal from the plurality of touch sense electrodes 5, an RFID receiver 24 connected to the touch panel controller 17, and a plurality of proximity A frequency modulator 18 connected to the sense electrode 7 and an RFID transmitter 23 connected to the frequency modulator 18 are provided.
  • the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4.
  • the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5.
  • the touch panel controller 17 detects the touch position of the touch target on the touch panel 1 based on the read linear sum signal S5.
  • the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4.
  • the RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18.
  • the touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18.
  • the frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
  • the ring 14a that generates the RFID device coil signal S10 approaches the proximity sense electrode 7
  • the stylus pen 21 that generates the RFID device coil signal S11 approaches the other proximity sense electrode 7.
  • a linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4 and the modulation signal S9 supplied to the proximity sense electrode 7, and the touch sense electrode 5
  • the touch panel controller 17 outputs a linear sum signal S6 influenced by a change in the coupling charge between the ring 14a and the proximity sense electrode 7 through which the proximity sense electrode signal S4 flows due to the proximity of the ring 14a and the stylus pen 21. And read to the RFID receiver 24.
  • the RFID receiver 24 based on the linear sum signal S ⁇ b> 6 supplied from the touch panel controller 17, approaches the ring 14 a and the stylus pen 21 to the touch panel 1, and the adjacent ring 14 a and the stylus pen 21 on the touch panel 1. Detect position.
  • FIG. 12 is a front view illustrating the configuration of the touch panel 1b according to the third embodiment.
  • a plurality of drive electrodes 4b formed by repeating a substantially hexagonal pattern along the X direction are arranged on the drive layer 2 with a certain interval in the Y direction.
  • a plurality of touch sense electrodes 5b formed by repeating a substantially rhombic pattern along the Y direction are arranged on the sense layer 3 with a certain interval in the X direction.
  • the drive layer proximity sense electrode 19 is formed in the drive layer 2 in a substantially loop shape along the X direction so as to surround a substantially rhombic pattern that is a part of each touch sense electrode 5b.
  • the loop-shaped electrode may be formed on the drive layer 2 other than the sense layer 3 so as to surround a part of each touch sense electrode 5b of the sense layer 3.
  • FIG. 13 is a front view showing the configuration of the touch panel 1c according to the fourth embodiment.
  • the touch panel 1c is provided with proximity sense electrodes 7a arranged in a U shape so as to further surround a plurality of proximity sense electrodes 7 arranged so as to surround each touch sense electrode 5.
  • a resonance frequency capacitor 8a connected to one end and the other end of the proximity sense electrode 7a is provided.
  • FIG. 14 is a schematic diagram showing a touch panel system 14c provided with a touch panel 1c.
  • the touch panel system 14c applies a driving voltage signal S1 to the plurality of driving electrodes 4, reads the linear sum signal S5 from the plurality of touch sensing electrodes 5, and a frequency modulator 18 connected to the proximity sensing electrode 7a.
  • an RFID transceiver 22 connected to the frequency modulator 18.
  • the stylus pen with memory 21 in which the RFID is embedded is detected by magnetic coupling. Since the finger 13 and the stylus pen 21 that is the RFID device use different frequencies, they can be identified. Excluding the handed area with the palm can also be performed well. In addition, the proximity and position of the RFID device can be detected.
  • the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4 in the touch detection period T1.
  • the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5. Based on the read linear sum signal S5, the touch panel controller 17 detects the touch position of the finger 13 that is a touch object on the touch panel 1.
  • the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4.
  • the RFID transceiver 22 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18.
  • the touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18.
  • the frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7a.
  • the touch panel controller 17 applies the touch panel transmitter signal S2 to each of the plurality of drive electrodes 4.
  • the stylus pen 21 approaches the proximity sense electrode 7a of the touch panel 1c while emitting the coil signal S3
  • the proximity sense electrode 7 and the proximity sense electrode 7a through which the proximity sense electrode signal S4 flows due to the proximity of the stylus pen 21 are detected.
  • the touch panel controller 17 reads a signal based on the change in the coupled charge between the proximity sense electrodes 7.
  • the touch panel controller 17 detects the proximity of the stylus pen 21 to the touch panel 1 c and the position of the adjacent stylus pen 21 on the touch panel 1 c based on the signal read from the proximity sense electrode 7.
  • FIG. 15 is a schematic diagram illustrating a touch panel system according to the fifth embodiment.
  • members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
  • a drive layer proximity sense electrode 19 arranged in a U shape so as to surround the drive electrode 4 is provided.
  • a resonance frequency capacitor 12 for determining a resonance frequency of the drive layer proximity sense electrode 19 is provided at one end and the other end of the drive layer proximity sense electrode 19.
  • a frequency modulator 18 is connected to the drive layer proximity sense electrode 19.
  • An NFC transmitter 25 is connected to the frequency modulator 18.
  • the differential amplifier 15a is connected to the touch sense electrodes 5 adjacent to each other.
  • An integration capacitor 16 and a switch 27 are arranged in parallel between one input and one output of the differential amplifier 15a.
  • An integration capacitor 16 and a switch 27 are arranged in parallel between the other input and the other output of the differential amplifier 15a.
  • the output of the differential amplifier 15 a is supplied to the ADC 28 and the RFID receiver 24.
  • a pair of switches 29 are provided between the differential amplifier 15 a and the RFID receiver 24.
  • the touch panel system according to Embodiment 5 has a touch detection mode ⁇ (1) and an NFC detection mode ⁇ (2).
  • the touch detection mode ⁇ (1) the switch 27 and the switch 29 are turned off, and the touch panel controller 17 detects the position of the touch target.
  • the NFC detection mode ⁇ (2) the switch 27 and the switch 29 are turned on. Then, the touch panel controller 17 is reset, the differential amplifier 15a is connected to the NFC receiver 26, and the RFID receiver 24 detects the proximity of the RFID device 9.
  • FIG. 16 is a schematic diagram illustrating a touch panel system according to the sixth embodiment.
  • members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
  • a plurality of proximity sense electrodes 7 are formed in a U shape so as to surround each touch sense electrode 5.
  • a resonance frequency capacitor 8 for determining the resonance frequency of the proximity sense electrode 7 is provided at one end and the other end of each proximity sense electrode 7.
  • a proximity sense electrode 7 a is arranged in a U shape so as to further surround the plurality of proximity sense electrodes 7.
  • An NFC transmitter 25 is connected to the proximity sense electrode 7a.
  • the differential amplifier 15a is connected to the touch sense electrodes 5 adjacent to each other.
  • An integration capacitor 16 and a switch 27 are arranged in parallel between one input and one output of the differential amplifier 15a.
  • An integration capacitor 16 and a switch 27 are arranged in parallel between the other input and the other output of the differential amplifier 15a.
  • the output of the differential amplifier 15a is supplied to the ADC 28 and the NFC receiver 26.
  • a pair of switches 29 are provided between the differential amplifier 15 a and the NFC receiver 26.
  • the touch panel controller 17 is connected to the ADC 28.
  • the NFC transmitter 25 operates in synchronization with the touch panel controller 17.
  • the NFC receiver 26 operates during the touch panel reset period.
  • the touch panel system has a touch detection mode ⁇ (1) and an NFC detection mode ⁇ (2) 2 as in the fifth embodiment.
  • the touch detection mode ⁇ (1) the switch 27 and the switch 29 are turned off, and the touch panel controller 17 detects the position of the touch target.
  • the NFC detection mode ⁇ (2) the switch 27 and the switch 29 are turned on. Then, the touch panel controller 17 is reset, the differential amplifier 15a is connected to the NFC receiver 26, and the RFID receiver 24 detects the proximity of the RFID device 9.
  • FIG. 17 is a schematic diagram illustrating a touch panel system according to the seventh embodiment.
  • members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
  • the RFID transmitter 23 is connected to the proximity sense electrode 7a provided on the touch panel 1c.
  • the RFID receiver 24 is connected to the touch panel controller 17 that applies the drive voltage signal S1 to the plurality of drive electrodes 4 and reads the linear sum signal S5 from the plurality of touch sense electrodes 5.
  • the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4.
  • the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5. Based on the read linear sum signal S5, the touch panel controller 17 detects the touch position of the finger 13 that is a touch object on the touch panel 1.
  • the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4.
  • the RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18.
  • the touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18.
  • the frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7a.
  • the ring 14a that generates the RFID device coil signal S10 approaches the proximity sense electrode 7
  • the stylus pen 21 that generates the RFID device coil signal S11 approaches the other proximity sense electrode 7.
  • the touch panel controller 17 outputs a linear sum signal S6 affected by a change in the coupling charge between the proximity sense electrodes 7 and 7a through which the proximity sense electrode signal S4 flows due to the proximity of the ring 14a and the stylus pen 21. Read along the electrode 5 and supply to the RFID receiver 24.
  • the RFID receiver 24 based on the linear sum signal S ⁇ b> 6 supplied from the touch panel controller 17, approaches the ring 14 a and the stylus pen 21 to the touch panel 1, and the adjacent ring 14 a and the stylus pen 21 on the touch panel 1. Detect position.
  • FIG. 18 is a cross-sectional view of a liquid crystal display panel 30 with a built-in touch panel according to the eighth embodiment.
  • the liquid crystal display panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33.
  • the circuit board 32 includes a TFT (thin film transistor, thin film transistor) substrate 41.
  • the TFT substrate 41 includes a TFT gate line 42, a TFT source line 43, a TH layer 44, and a plurality of pixel electrodes 48 formed on the liquid crystal layer 54 side.
  • a force shield metal 47 is provided on the TH layer 44.
  • the TFT gate line 42, the TFT source line 43, and the TH layer 44 are provided for switching the pixel electrode 48.
  • a polarizing plate 49, a backlight unit 50, and an EMI layer 62 are formed on the side of the TFT substrate 41 opposite to the liquid crystal layer 54.
  • the counter substrate 33 has a CF (Color Filter) substrate 53.
  • the CF substrate 53 includes a color filter 63 formed on the liquid crystal layer 54 side and a black matrix 39.
  • the liquid crystal display panel 30 is provided with a pressure sensor 35 that detects the pressure applied to the counter substrate 33.
  • the pressure sensor 35 includes a drive electrode 36 formed on the black matrix 39 and a sense electrode 37 formed on the liquid crystal layer 54 side of the pixel electrode 48.
  • the sense electrode 37 is also used as a common electrode disposed on the TFT substrate 41 in order to form an electric field that controls the orientation of the liquid crystal molecules contained in the liquid crystal layer 54.
  • the sense electrode 37 is connected to a force receiving wiring 46 formed between the pixel electrode 48 and the TH layer 44.
  • the CF substrate 53 has a photo spacer 40 provided on the drive electrode 36 so as to protrude toward the liquid crystal layer 54 in order to maintain the cell thickness of the liquid crystal layer 54.
  • a sense electrode 38 for a touch panel is provided on the opposite side of the CF substrate 53 from the liquid crystal layer 54.
  • a polarizing plate 51 and a cover glass 52 are formed on the sense electrode 38.
  • the liquid crystal display panel 30 includes a touch panel that detects a touch on the counter substrate 33.
  • This touch panel has a sense electrode 38 formed on the opposite side of the liquid crystal layer 54 of the CF substrate 53 in order to read a signal based on the electrostatic capacitance between the touch electrode 36 and the drive electrode 36.
  • the drive electrode of the touch panel is also used as the drive electrode 36.
  • the touch panel according to this embodiment is built in the liquid crystal display panel 30, and the drive layer in which the drive electrode 36 is formed and the sense layer in which the sense electrode 38 is formed are formed on the counter substrate 33. .
  • a proximity sense electrode (not shown) for detecting the proximity of the coil is further formed on the sense layer.
  • the proximity sense electrode is made of transparent ITO.
  • the sense electrode 38 may be disposed below the black matrix 39 or may be disposed at a position where the proximity sense electrode is covered by the black matrix 39.
  • the drive layer and the sense layer may be formed on the circuit board 32.
  • one of the drive layer and the sense layer may be formed on the circuit board 32 and the other may be formed on the counter substrate 33.
  • the touch panels 1, 1 a, 1 b, and 1 c include a plurality of drive electrodes 4 and 4 b formed on the drive layer 2 along the first direction, and a second crossing the drive electrodes 4 and 4 b.
  • Proximity sense electrodes 7 and 7a are formed in the sense layer 3.
  • the proximity sense electrode for detecting the proximity of the coil is provided on the touch panel for detecting the touch. For this reason, since the electrode for recognizing the proximity of the coil is provided on a touch panel that is an existing member, there is no need to additionally provide a new member to recognize the proximity of the coil as in Patent Document 1. . As a result, it is possible to realize a touch panel that can recognize the proximity of the coil without increasing the material cost and the manufacturing cost.
  • the coil may be provided in the RFID device in the aspect 1.
  • the proximity of the RFID device can be detected.
  • the touch panels 1, 1 a, 1 b, and 1 c according to aspect 3 of the present invention may be formed such that the proximity sense electrodes 7 and 7 a have the resonance frequency of the coil 10 in the above aspect 1 or 2.
  • the proximity sense electrode resonates with the coil due to the proximity of the coil. For this reason, the combined charge between the proximity sense electrode and the touch sense electrode changes. Accordingly, the proximity of the coil can be detected by changing the linear sum signal read along the plurality of touch sense electrodes in accordance with the change in the combined charge.
  • the touch panel 1, 1 a, 1 b, 1 c according to aspect 4 of the present invention is arranged such that the proximity sense electrodes 7, 7 a surround the touch sense electrodes 5, 5 b in any one of the aspects 1 to 3. May be.
  • the proximity sense electrode arranged so as to surround the touch sense electrode is electrostatically coupled to the touch sense electrode, and a change in induced current generated in the proximity sense electrode due to the proximity of the coil causes the touch sense electrode to change. Causes a change in the flowing current. Therefore, the proximity of the coil can be detected by detecting the current flowing through the touch sense electrode.
  • the proximity sense electrodes 7, 7a may be made of ITO (indium tin oxide) in any one of the first to fourth aspects.
  • the proximity sense electrode becomes transparent, display visibility of the display device corresponding to the touch panel is improved.
  • the touch panel 1, 1 a, 1 b, 1 c according to aspect 6 of the present invention is the touch panel 1, 1 a, 1 b, 1 c according to any one of the above aspects 1 to 5, wherein the proximity sense electrodes 7, 7 a have a U-shape, A resonance frequency capacitor 8 or 8a connected to one end and the other end of the proximity sense electrode 7 or 7a may be further provided to determine the resonance frequency of 7a.
  • the resonance frequency of the proximity sense electrode that resonates with the coil can be determined by the capacitance of the resonance frequency capacitor.
  • the touch panel 1, 1 a, 1 b, 1 c according to aspect 7 of the present invention is the touch panel 1, 1 a, 1 b, 1 c according to any one of the aspects 1 to 6, wherein a plurality of the proximity sense electrodes 7 are formed, and the plurality of proximity sense electrodes 7 are It may be arranged at a position corresponding to each touch sense electrode 5.
  • the position in the direction perpendicular to the touch sense electrode of the coil close to the touch panel can be detected.
  • the touch panel 1a, 1b according to aspect 8 of the present invention has the resonance frequency of the coil 10 so as to have the resonance frequency of the coil 10 in order to detect the proximity of the coil 10.
  • the plurality of drive layer proximity sense electrodes 19 may be further provided, and the plurality of drive layer proximity sense electrodes 19 may be disposed at positions corresponding to the drive electrodes 4b.
  • the touch panel 1, 1 a, 1 b, 1 c according to aspect 9 of the present invention is the touch detection period T 1 for detecting a touch on the touch panel 1, 1 a, 1 b, 1 c in any one of the above aspects 1 to 6.
  • a drive voltage is applied to each of the plurality of drive electrodes 4 and 4b, and a linear sum signal derived from charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes 4 and 4b is a plurality of touch sense electrodes.
  • a coil detection voltage (touch panel transmitter signal S2) is applied to each of the drive electrodes 4 and 4b in the coil detection period T2 for detecting the proximity of the coil 10;
  • a plurality of capacitors based on the coil detection voltage (touch panel transmitter signal S2) applied to the drive electrodes 4 and 4b.
  • the linear sum signal S6 derived from the electric charge of the first and second electrodes is affected by the change in the combined charge between the proximity sense electrode 7 and the touch sense electrode 5 due to the proximity of the coil 10, and along the plurality of touch sense electrodes 5. May be read out.
  • a touch can be detected in the touch detection period, and the proximity of the coil can be detected in the coil detection period.
  • the touch panel 1, 1a, 1b, 1c is the liquid crystal display panel 30 according to any one of the first to ninth aspects, wherein the touch panel 1, 1a, 1b, 1c is incorporated in the liquid crystal display panel 30.
  • the panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33.
  • the driving layer 2 and the sense layer 3 may be formed on the circuit board 32.
  • the touch panel can be built in the circuit board of the liquid crystal display panel.
  • the touch panel 1, 1 a, 1 b, 1 c is the liquid crystal display panel 30 according to any one of the aspects 1 to 9, wherein the touch panel 1, 1 a, 1 b, 1 c is incorporated in the liquid crystal display panel 30.
  • the panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33.
  • the driving layer 2 may be formed on one of the circuit board 32 and the counter substrate 33, and the sense layer 3 may be formed on the other of the circuit board 32 and the counter substrate 33.
  • the touch panel can be incorporated in the circuit substrate and the counter substrate of the liquid crystal display panel.
  • the touch panel 1, 1 a, 1 b, 1 c according to the aspect 12 of the present invention is the liquid crystal display panel 30 according to any one of the above aspects 1 to 9, wherein the touch panel 1, 1 a, 1 b, 1 c is incorporated in the liquid crystal display panel 30.
  • the panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33.
  • the driving layer 2 and the sense layer 3 may be formed on the counter substrate 33.
  • the touch panel can be built in the counter substrate of the liquid crystal display panel.
  • the touch panel 1 ⁇ 1a ⁇ 1b ⁇ 1c is the touch panel 1 ⁇ 1a ⁇ 1b ⁇ 1c for inputting information to the touch panel 1 ⁇ 1a ⁇ 1b ⁇ 1c.
  • the stylus pen 21 may be provided.
  • the proximity of the pen provided with the coil can be detected.
  • a touch panel system 14 includes a touch panel 1, 1a, 1b, 1c according to any one of the aspects 1 to 13 of the present invention and a controller that controls the touch panel 1, 1a, 1b, 1c ( A plurality of drives in a touch detection period T1 for the controller (touch panel controller 17) to detect a touch on the touch panel 1, 1a, 1b, 1c.
  • the plurality of drive electrodes 4 and 4b Coil detection voltage (touch panel transmitter signal) A drive circuit 17a to which S2) is applied, and a linear sum signal S5 derived from charges of a plurality of capacitors based on the drive voltage (drive voltage signal S1) applied to the drive electrodes 4 and 4b in the touch detection period T1.
  • a linear sum signal S6 derived from the charges of a plurality of capacitors based on the above, and affected by the change in the combined charge between the proximity sense electrodes 7 and 7a and the touch sense electrode 5 due to the proximity of the coil 10
  • the linear sum signal S6 is read along the plurality of touch sense electrodes 5 to detect the proximity of the coil 10.
  • a modulator 18 is further provided.

Abstract

According to the present invention, the proximity of a coil is detected without increasing material costs and manufacturing costs. This touch panel (1) is provided with: a plurality of drive devices (4) formed in a drive layer (2); and a plurality of touch sensing electrodes (5) formed in a sensing layer (3), wherein a proximity sensing electrode (7) for detecting the proximity of a coil is formed in the sensing layer (3).

Description

タッチパネル及びタッチパネルシステムTouch panel and touch panel system
　本発明は、タッチ位置を検出することができるとともに、コイルの近接を検出することができるタッチパネル及びタッチパネルシステムに関する。 The present invention relates to a touch panel and a touch panel system capable of detecting a touch position and detecting proximity of a coil.
　コイルの近接を検出することができる表示装置が従来技術として知られている（特許文献１）。特許文献１に開示されたタッチ制御表示スクリーンは、ワイヤ格子の誘導層が表示スクリーンの背後に組み込まれている。誘導層のワイヤ格子は、Ｘ軸方向に沿って形成されたウィヤとＹ軸方向に沿って形成されたワイヤとから成り、電磁誘導アンテナアレイを構成して、コイル等の誘導素子の近接を認識する。 A display device capable of detecting the proximity of a coil is known as a prior art (Patent Document 1). In the touch control display screen disclosed in Patent Document 1, a wire grid induction layer is incorporated behind the display screen. The wire grating of the induction layer consists of a wire formed along the X-axis direction and a wire formed along the Y-axis direction, and constitutes an electromagnetic induction antenna array to recognize the proximity of induction elements such as coils. To do.
米国特許出願公開第2009/0231299号明細書（2009年9月17日公開）US Patent Application Publication No. 2009/0231299 (published September 17, 2009)
　しかしながら、上述のような従来技術は、表示スクリーンの背後にワイヤ格子の誘導層を設ける構成であるため、コイルの近接を認識するための部材を新たに追加しなければならない。このため、コイルの近接を認識するために材料コスト及び製造コストが増大するという問題がある。 However, since the conventional technology as described above has a structure in which a wire grid induction layer is provided behind the display screen, a member for recognizing the proximity of the coil must be newly added. For this reason, in order to recognize the proximity of a coil, there exists a problem that material cost and manufacturing cost increase.
　本発明は、前記の問題点に鑑みてなされたものであり、その目的は、材料コスト及び製造コストが増大することなく、コイルの近接を認識することができるタッチパネル及びタッチパネルシステムを実現することにある。 This invention is made | formed in view of the said problem, The objective is to implement | achieve the touchscreen and touchscreen system which can recognize the proximity | contact of a coil, without increasing material cost and manufacturing cost. is there.
　上記の課題を解決するために、本発明の一態様に係るタッチパネルは、第１方向に沿って駆動層に形成される複数の駆動電極と、前記駆動電極と交差する第２方向に沿って前記駆動層と絶縁されたセンス層に形成される複数のタッチセンス電極とを備えたタッチパネルであって、コイルの近接を検出するための近接センス電極を前記センス層に形成したことを特徴とする。 In order to solve the above problems, a touch panel according to one embodiment of the present invention includes a plurality of drive electrodes formed in a drive layer along a first direction, and the second direction intersecting the drive electrodes. A touch panel including a drive layer and a plurality of touch sense electrodes formed on an insulated sense layer, wherein a proximity sense electrode for detecting proximity of a coil is formed on the sense layer.
　上記の課題を解決するために、本発明の一態様に係るタッチパネルシステムは、本発明の一態様に係るタッチパネルと、前記タッチパネルを制御するコントローラとを備えるタッチパネルシステムであって、前記コントローラが、前記タッチパネルへのタッチを検出するためのタッチ検出期間において、前記複数の駆動電極のそれぞれに駆動電圧を印加するとともに、前記コイルの近接を検出するためのコイル検出期間において、前記複数の駆動電極のそれぞれにコイル検出電圧を印加する駆動回路と、前記タッチ検出期間において、前記駆動電極に印加された駆動電圧に基づく複数のコンデンサの電荷に由来する線形和信号を複数のタッチセンス電極に沿って読み出してタッチ位置を検出すると共に、前記コイル検出期間において、前記駆動電極に印加されたコイル検出電圧に基づく複数のコンデンサの電荷に由来する線形和信号であって、前記コイルの近接による前記近接センス電極と前記タッチセンス電極との間の結合電荷の変化による影響を受けた線形和信号を複数のタッチセンス電極に沿って読み出して前記コイルの近接を検出する検出回路とを有し、前記近接センス電極から前記コイルの共振周波数に基づく信号を受け取り、前記信号を周波数変調してＲＦＩＤ送受信器及び前記コントローラに供給する周波数変調器をさらに備えることを特徴とする。 In order to solve the above problems, a touch panel system according to an aspect of the present invention is a touch panel system including the touch panel according to an aspect of the present invention and a controller that controls the touch panel. In the touch detection period for detecting a touch on the touch panel, a drive voltage is applied to each of the plurality of drive electrodes, and each of the plurality of drive electrodes in a coil detection period for detecting the proximity of the coil. A drive circuit for applying a coil detection voltage to the read circuit, and, during the touch detection period, linear sum signals derived from the charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes are read along the plurality of touch sense electrodes. While detecting the touch position, in the coil detection period, A linear sum signal derived from the charges of a plurality of capacitors based on a coil detection voltage applied to the moving electrode, and an influence due to a change in a combined charge between the proximity sense electrode and the touch sense electrode due to the proximity of the coil Receiving a linear sum signal along a plurality of touch sense electrodes to detect proximity of the coil, receiving a signal based on a resonance frequency of the coil from the proximity sense electrode, and receiving the signal The apparatus further includes a frequency modulator that modulates the frequency and supplies the RFID transceiver to the controller.
　本発明の一態様によれば、材料コスト及び製造コストが増大することなく、コイルの近接を認識することができるタッチパネル及びタッチパネルシステムを実現することができるという効果を奏する。 According to one aspect of the present invention, there is an effect that it is possible to realize a touch panel and a touch panel system that can recognize the proximity of a coil without increasing material costs and manufacturing costs.
（ａ）は実施形態１に係るタッチパネルの構成を示す正面図であり、（ｂ）は（ａ）に示される面ＡＡに沿った断面図である。(A) is a front view which shows the structure of the touchscreen which concerns on Embodiment 1, (b) is sectional drawing along surface AA shown by (a). 上記タッチパネルに設けられた近接センス電極の動作を説明するための模式図である。It is a schematic diagram for demonstrating operation | movement of the proximity | contact sense electrode provided in the said touch panel. 上記タッチパネルに設けられた近接センス電極及びタッチセンス電極の動作を説明するための模式図である。It is a schematic diagram for demonstrating operation | movement of the proximity sense electrode and touch sense electrode which were provided in the said touch panel. 上記タッチパネルが設けられたタッチパネルシステムを示す模式図である。It is a schematic diagram which shows the touchscreen system provided with the said touchscreen. 上記タッチパネルシステムの動作を説明するためのタイミングチャートである。It is a timing chart for demonstrating operation | movement of the said touchscreen system. 上記タッチパネルの入出力信号を説明するための模式図である。It is a schematic diagram for demonstrating the input-output signal of the said touch panel. （ａ）は上記タッチパネルに設けられたタッチセンス電極を囲むように配置された近接センス電極の動作を説明するための模式図であり、（ｂ）は上記タッチパネルに設けられた駆動電極を囲むように配置された駆動層近接センス電極の動作を説明するための模式図である。(A) is a schematic diagram for demonstrating operation | movement of the proximity | contact sense electrode arrange | positioned so that the touch sense electrode provided in the said touch panel may be enclosed, (b) so that the drive electrode provided in the said touch panel may be enclosed. It is a schematic diagram for demonstrating operation | movement of the drive layer proximity | contact proximity electrode arrange | positioned in FIG. 上記近接センス電極、駆動層近接センス電極の動作を説明するためのタイミングチャートである。4 is a timing chart for explaining operations of the proximity sense electrode and the drive layer proximity sense electrode. 上記タッチパネルシステムの動作を説明するための模式図である。It is a schematic diagram for demonstrating operation | movement of the said touchscreen system. 実施形態２に係るタッチパネルの構成を示す正面図である。It is a front view which shows the structure of the touchscreen which concerns on Embodiment 2. FIG. 上記タッチパネルが設けられたタッチパネルシステムを示す模式図である。It is a schematic diagram which shows the touchscreen system provided with the said touchscreen. 実施形態３に係るタッチパネルの構成を示す正面図である。It is a front view which shows the structure of the touchscreen which concerns on Embodiment 3. FIG. 実施形態４に係るタッチパネルの構成を示す正面図である。It is a front view which shows the structure of the touchscreen which concerns on Embodiment 4. 上記タッチパネルが設けられたタッチパネルシステムを示す模式図である。It is a schematic diagram which shows the touchscreen system provided with the said touchscreen. 実施形態５に係るタッチパネルシステムを示す模式図である。FIG. 10 is a schematic diagram illustrating a touch panel system according to a fifth embodiment. 実施形態６に係るタッチパネルシステムを示す模式図である。FIG. 10 is a schematic diagram illustrating a touch panel system according to a sixth embodiment. 実施形態７に係るタッチパネルシステムを示す模式図である。It is a schematic diagram which shows the touchscreen system which concerns on Embodiment 7. FIG. 実施形態８に係るタッチパネルが内蔵された液晶表示パネルの断面図である。It is sectional drawing of the liquid crystal display panel with which the touchscreen which concerns on Embodiment 8 was incorporated.
　以下、本発明の実施の形態について、詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
　〔実施形態１〕
　（タッチパネル１の構成）
　図１（ａ）は実施形態１に係るタッチパネル１の構成を示す正面図であり、（ｂ）は（ａ）に示される面ＡＡに沿った断面図である。タッチパネル１は、図１（ｂ）に示すように、駆動層２と、センス層３と、駆動層２及びセンス層３の間に形成される絶縁層１１とを備える。そして、タッチパネル１は、図１（ａ）（ｂ）に示すように、Ｘ方向（第１方向）に沿って駆動層２に互いに平行に形成される複数の駆動電極４と、Ｙ方向（第２方向）に沿ってセンス層３に互いに平行に形成される複数のタッチセンス電極５と、複数の駆動電極４及び複数のタッチセンス電極５の間にそれぞれ形成される複数のコンデンサ（図示せず）とを備える。 Embodiment 1
(Configuration of touch panel 1)
FIG. 1A is a front view illustrating a configuration of the touch panel 1 according to the first embodiment, and FIG. 1B is a cross-sectional view taken along a plane AA illustrated in FIG. As shown in FIG. 1B, the touch panel 1 includes a drive layer 2, a sense layer 3, and an insulating layer 11 formed between the drive layer 2 and the sense layer 3. As shown in FIGS. 1A and 1B, the touch panel 1 includes a plurality of drive electrodes 4 formed in parallel to the drive layer 2 along the X direction (first direction), and the Y direction (first direction). A plurality of touch sense electrodes 5 formed in parallel to the sense layer 3 along two directions), and a plurality of capacitors (not shown) formed between the plurality of drive electrodes 4 and the plurality of touch sense electrodes 5, respectively. ).
　タッチセンス電極５が駆動電極４と直交する方向に形成される例を図２は示しているが、本発明はこれに限定されず、タッチセンス電極５は駆動電極４と交差する方向に形成されていればよい。 Although FIG. 2 shows an example in which the touch sense electrode 5 is formed in a direction orthogonal to the drive electrode 4, the present invention is not limited to this, and the touch sense electrode 5 is formed in a direction crossing the drive electrode 4. It only has to be.
　タッチパネル１へのタッチを検出するために、複数の駆動電極４のそれぞれに駆動電圧が印加される。そして、駆動電極４に印加された駆動電圧に基づく複数のコンデンサの静電容量に由来する線形和信号が複数のタッチセンス電極５に沿って読み出される。次に、複数のタッチセンス電極５に沿って読み出された線形和信号に基づいてタッチ位置が検出される。 In order to detect a touch on the touch panel 1, a drive voltage is applied to each of the plurality of drive electrodes 4. Then, linear sum signals derived from the capacitances of the plurality of capacitors based on the drive voltage applied to the drive electrode 4 are read out along the plurality of touch sense electrodes 5. Next, the touch position is detected based on the linear sum signal read along the plurality of touch sense electrodes 5.
　指１３に装着されたコイル１０の近接を検出するための複数の近接センス電極７がセンス層３に形成される。各近接センス電極７は、タッチセンス電極５を囲むようにＵ字型形状に配置される。このように、複数個の近接センス電極７が、各タッチセンス電極５に対応する位置にそれぞれ配置される。 A plurality of proximity sense electrodes 7 for detecting the proximity of the coil 10 attached to the finger 13 are formed on the sense layer 3. Each proximity sense electrode 7 is arranged in a U shape so as to surround the touch sense electrode 5. In this way, the plurality of proximity sense electrodes 7 are respectively arranged at positions corresponding to the touch sense electrodes 5.
　近接センス電極７は、コイル１０の共振周波数を有するように形成される。近接センス電極７の共振周波数を定めるために近接センス電極７の一端と他端とに接続される共振周波数コンデンサ８が設けられる。共振周波数コンデンサ８は、センス層３に配置されることが好ましいが、センス層３以外の箇所、例えば駆動層２に配置されてもよい。 The proximity sense electrode 7 is formed so as to have the resonance frequency of the coil 10. In order to determine the resonance frequency of the proximity sense electrode 7, a resonance frequency capacitor 8 connected to one end and the other end of the proximity sense electrode 7 is provided. The resonance frequency capacitor 8 is preferably disposed in the sense layer 3, but may be disposed in a place other than the sense layer 3, for example, in the drive layer 2.
　近接センス電極７は、透明なＩＴＯ（酸化インジウムスズ、Indium Tin Oxide）により構成されることが好ましい。 The proximity sense electrode 7 is preferably made of transparent ITO (Indium Tin Oxide).
　静電容量型タッチパネルは、多様なタッチアプリケーション（ソフトウェア）に適用されるスマートフォン、タブレットＰＣ、又は他のポータブルメディア等の電子機器において一般的なユーザーインターフェースになっている。タッチパネルは、また、自動販売機、家庭用電気製品のような他の電子機器にも一般的に使用されている。近年、異なる装置が接続されるインターネットオブシングス（Internet of Things）が普及し、まもなく、タッチパネルを通して装置自体が接続される必要が生じる。 The capacitive touch panel is a general user interface in electronic devices such as smartphones, tablet PCs, and other portable media that are applied to various touch applications (software). Touch panels are also commonly used in other electronic devices such as vending machines and household appliances. In recent years, Internet シ ン グ of Things, to which different devices are connected, has become widespread, and soon the device itself needs to be connected through a touch panel.
　しかしながら、従来の静電容量型タッチパネルが検出することができるのはタッチのみである。従来の静電容量型タッチパネルはタッチした対象物のタイプを識別することができない。即ち、タッチした対象物が、金属であるのか、人間の指であるのか、又は他の装置であるのかを従来の静電容量型タッチパネルは識別することができない。例えば、二人のユーザＡ及びユーザＢがディスプレイにタッチすると、タッチされた指がユーザＡのものかユーザＢのものかを従来のタッチパネルは識別することができない。 However, a conventional capacitive touch panel can only detect a touch. A conventional capacitive touch panel cannot identify the type of an object touched. That is, the conventional capacitive touch panel cannot identify whether the touched object is a metal, a human finger, or another device. For example, when two users A and B touch the display, the conventional touch panel cannot identify whether the touched finger belongs to user A or user B.
　本実施形態では、センス層３に、一対のセンス電極（近接センス電極７、タッチセンス電極５）のグループを配置する。一対のセンス電極の一方（近接センス電極７（外側電極））は、ループ又はＬＣ回路を電気的に形成する。電気的ループを形成する近接センス電極７は、一対のセンス電極の他方（タッチセンス電極５（内側電極））の周りを包むように形成されることが好ましい。電気的ループを形成する近接センス電極７は、タッチパネルの周波数（例えば、ＲＦ周波数）よりも高い周波数で共振し、ＲＦＩＤ（Radio Frequency IDentifier）結合、又は、掃引周波数検出識別を可能にする。上記高い周波数の信号はタッチパネル信号により変調される。 In this embodiment, a group of a pair of sense electrodes (proximity sense electrode 7 and touch sense electrode 5) is arranged in the sense layer 3. One of the pair of sense electrodes (proximity sense electrode 7 (outer electrode)) electrically forms a loop or an LC circuit. The proximity sense electrode 7 forming the electrical loop is preferably formed so as to wrap around the other of the pair of sense electrodes (touch sense electrode 5 (inner electrode)). The proximity sense electrode 7 that forms an electrical loop resonates at a frequency higher than the frequency of the touch panel (for example, the RF frequency), and enables RFID (Radio Frequency IDenter) coupling or sweep frequency detection identification. The high frequency signal is modulated by a touch panel signal.
　（近接センス電極７及びタッチセンス電極５の動作）
　図２はタッチパネル１に設けられた近接センス電極７の動作を説明するための模式図である。図３はタッチパネル１に設けられた近接センス電極７及びタッチセンス電極５の動作を説明するための模式図である。 (Operation of proximity sense electrode 7 and touch sense electrode 5)
FIG. 2 is a schematic diagram for explaining the operation of the proximity sense electrode 7 provided on the touch panel 1. FIG. 3 is a schematic diagram for explaining the operation of the proximity sense electrode 7 and the touch sense electrode 5 provided on the touch panel 1.
　電気的ループを形成する近接センス電極７の共振周波数を有するコイル１０を備えて高周波数の放射を伴うＲＦＩＤ装置９がタッチパネル１に近づくと、近接センス電極７における磁束が変化する。その結果、誘導起電力が生じる。これにより、近接センス電極７の中で結合電荷の変化が生じる。近接センス電極７とタッチセンス電極５との間の結合電荷の変化ΔＱｃが、タッチパネル１を制御するタッチパネルコントローラによって検出される。従って、上記高周波数の放射を伴うＲＦＩＤ装置９のタッチパネル１上の位置が検出され、上記ＲＦＩＤ装置９及びその使用者が容易に識別される。 When the RFID device 9 including the coil 10 having the resonance frequency of the proximity sense electrode 7 forming an electrical loop and accompanied by high-frequency radiation approaches the touch panel 1, the magnetic flux in the proximity sense electrode 7 changes. As a result, an induced electromotive force is generated. This causes a change in the combined charge in the proximity sense electrode 7. A change in coupling charge ΔQ c between the proximity sense electrode 7 and the touch sense electrode 5 is detected by a touch panel controller that controls the touch panel 1. Therefore, the position on the touch panel 1 of the RFID device 9 accompanied with the high frequency radiation is detected, and the RFID device 9 and the user thereof are easily identified.
　使用者を識別する信号は、タッチパネルコントローラを使用することにより生成される。コイル１０を有するＲＦＩＤ装置９がタッチパネル１に近づくと、ＲＦＩＤ装置９と近接センス電極７との間で相互インダクタンスが生じる。誘導電流の変化により、近接センス電極７からタッチセンス電極５に流れる電荷に変化が生じる。電気的ループを形成する近接センス電極７で共振が生じ、近接センス電極７とタッチセンス電極５との間で結合容量の変化ΔＱｃが誘導される。 The signal for identifying the user is generated by using the touch panel controller. When the RFID device 9 having the coil 10 approaches the touch panel 1, mutual inductance is generated between the RFID device 9 and the proximity sense electrode 7. Due to the change in the induced current, the charge flowing from the proximity sense electrode 7 to the touch sense electrode 5 changes. Resonance occurs in the proximity sense electrode 7 that forms an electrical loop, and a coupling capacitance change ΔQ c is induced between the proximity sense electrode 7 and the touch sense electrode 5.
　近接センス電極７のループ形状は、そのインダクタンスを増大させる。近接センス電極７は、予め定められた共振周波数に一致するように、静電容量とさらに結合する。 The loop shape of the proximity sense electrode 7 increases its inductance. The proximity sense electrode 7 is further coupled to the capacitance so as to match a predetermined resonance frequency.
　交流信号を伴うループ状の近接センス電極７とＲＦＩＤ装置９のコイル１０との誘導結合の結果、コイル１０と近接センス電極７とを通って流れる磁束が変化する。これにより、下記（式１）～（式３）に示すように、ｅｍｆが誘導され、自己インダクタンス電圧が変化する。 As a result of inductive coupling between the loop-shaped proximity sense electrode 7 accompanied by an AC signal and the coil 10 of the RFID device 9, the magnetic flux flowing through the coil 10 and the proximity sense electrode 7 changes. As a result, as shown in the following (formula 1) to (formula 3), emf is induced and the self-inductance voltage changes.
Figure JPOXMLDOC01-appb-M000001
Figure JPOXMLDOC01-appb-M000001
　外側の近接センス電極７は、与えられた静電容量を通って内側のタッチセンス電極５と結合する。ループ状の近接センス電極７における誘導電流の変化により、内側のタッチセンス電極５における電流及び電荷の流れが変化する。これにより、コイル１０の近接が検出される。 The outer proximity sense electrode 7 is coupled to the inner touch sense electrode 5 through a given capacitance. Due to the change of the induced current in the loop-shaped proximity sense electrode 7, the flow of current and charge in the inner touch sense electrode 5 changes. Thereby, the proximity of the coil 10 is detected.
　（タッチパネルシステム１４の構成及び動作）
　図４はタッチパネル１が設けられたタッチパネルシステム１４を示す模式図である。図５はタッチパネルシステム１４の動作を説明するためのタイミングチャートである。図６はタッチパネル１の入出力信号を説明するための模式図である。 (Configuration and operation of touch panel system 14)
FIG. 4 is a schematic diagram showing the touch panel system 14 provided with the touch panel 1. FIG. 5 is a timing chart for explaining the operation of the touch panel system 14. FIG. 6 is a schematic diagram for explaining input / output signals of the touch panel 1.
　タッチパネルシステム１４は、タッチパネル１と、タッチパネル１を制御するタッチパネルコントローラ１７（コントローラ）とを備える。 The touch panel system 14 includes a touch panel 1 and a touch panel controller 17 (controller) that controls the touch panel 1.
　タッチパネルコントローラ１７は、タッチパネル１へのタッチを検出するためのタッチ検出期間Ｔ１において、複数の駆動電極４のそれぞれに駆動電圧信号Ｓ１（駆動電圧）を印加するとともに、ＲＦＩＤ装置９の近接を検出するためのＲＦＩＤ装置検出期間Ｔ２において、複数の駆動電極４のそれぞれにタッチパネルトランスミッター信号（Ｔｘ）Ｓ２（コイル検出電圧）を印加する駆動回路１７ａを有する。 The touch panel controller 17 applies a drive voltage signal S1 (drive voltage) to each of the plurality of drive electrodes 4 and detects the proximity of the RFID device 9 in the touch detection period T1 for detecting a touch on the touch panel 1. In the RFID device detection period T2 for this purpose, a drive circuit 17a for applying a touch panel transmitter signal (Tx) S2 (coil detection voltage) to each of the plurality of drive electrodes 4 is provided.
　また、タッチパネルコントローラ１７は、タッチ検出期間Ｔ１において、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿って読み出してタッチ位置を検出すると共に、ＲＦＩＤ装置検出期間Ｔ２において、駆動電極４に印加されたタッチパネルトランスミッター信号Ｓ２に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、タッチセンス電極５とＲＦＩＤ装置９の近接により近接センス電極信号Ｓ４が流れる近接センス電極７との間の結合電荷の変化による影響を受けた線形和信号Ｓ６を複数のタッチセンス電極５に沿って読み出してＲＦＩＤ装置９の近接を検出する検出回路１７ｂを有する。 Further, the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5 in the touch detection period T1. A linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4 in the RFID device detection period T2 while detecting the touch position, the touch sense electrode 5 and the RFID device The proximity of the RFID device 9 is read by reading out the linear sum signal S6 affected by the change in the coupling charge with the proximity sense electrode 7 through which the proximity sense electrode signal S4 flows due to the proximity of 9 along the plurality of touch sense electrodes 5. It has a detection circuit 17b for detection.
　タッチパネルシステム１４には、各タッチセンス電極５にそれぞれ接続された増幅器１５が設けられている。各増幅器１５には積分容量１６が設けられている。増幅器１５は、タッチ検出期間Ｔ１において、タッチセンス電極５に沿って読み出された線形和信号Ｓ５を増幅して検出回路１７ｂに供給する。増幅器１５は、ＲＦＩＤ装置検出期間Ｔ２において、タッチセンス電極５に沿って読み出された線形和信号Ｓ６を増幅して検出回路１７ｂに供給する。 The touch panel system 14 is provided with an amplifier 15 connected to each touch sense electrode 5. Each amplifier 15 is provided with an integrating capacitor 16. In the touch detection period T1, the amplifier 15 amplifies the linear sum signal S5 read along the touch sense electrode 5 and supplies the amplified signal to the detection circuit 17b. In the RFID device detection period T2, the amplifier 15 amplifies the linear sum signal S6 read along the touch sense electrode 5 and supplies the amplified signal to the detection circuit 17b.
　タッチパネルシステム１４は、周波数変調器１８とＲＦＩＤ送信器２３とを備えている。周波数変調器１８は、タッチパネルコントローラ１７から受け取った矩形状の駆動信号に、ＲＦＩＤ送信器２３から受け取ったＲＦＩＤ信号を重畳した変調信号を生成して近接センス電極７に供給する。 The touch panel system 14 includes a frequency modulator 18 and an RFID transmitter 23. The frequency modulator 18 generates a modulation signal obtained by superimposing the RFID signal received from the RFID transmitter 23 on the rectangular drive signal received from the touch panel controller 17 and supplies the modulation signal to the proximity sense electrode 7.
　このように構成されたタッチパネルシステム１４は、以下のように動作する。 The touch panel system 14 configured as described above operates as follows.
　まず、ＲＦＩＤ装置９のコイル１０が、コイル信号Ｓ３を放射しながらタッチパネル１の近接センス電極７に近接する。そして、タッチ検出期間Ｔ１において、タッチパネルコントローラ１７の駆動回路１７ａが、複数の駆動電極４のそれぞれに駆動電圧信号Ｓ１を印加する。次に、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿って増幅器１５が読み出して増幅し、タッチパネルコントローラ１７の検出回路１７ｂに供給する。その後、検出回路１７ｂは、増幅器１５から供給された線形和信号Ｓ５に基づいてタッチパネル１へのタッチ対象物のタッチ位置を検出する。 First, the coil 10 of the RFID device 9 approaches the proximity sense electrode 7 of the touch panel 1 while radiating the coil signal S3. In the touch detection period T1, the drive circuit 17a of the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4. Next, the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 is read and amplified by the amplifier 15 along the plurality of touch sense electrodes 5, and the touch panel controller 17 This is supplied to the detection circuit 17b. Thereafter, the detection circuit 17b detects the touch position of the touch target on the touch panel 1 based on the linear sum signal S5 supplied from the amplifier 15.
　そして、ＲＦＩＤ装置検出期間Ｔ２において、駆動回路１７ａが複数の駆動電極４のそれぞれにタッチパネルトランスミッター信号Ｓ２を印加する。次に、駆動電極４に印加されたタッチパネルトランスミッター信号Ｓ２に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、タッチセンス電極５とＲＦＩＤ装置９の近接により近接センス電極信号Ｓ４が流れる近接センス電極７との間の結合電荷の変化による影響を受けた線形和信号Ｓ６を増幅器１５が複数のタッチセンス電極５に沿って読み出して増幅し、タッチパネルコントローラ１７の検出回路１７ｂに供給する。その後、検出回路１７ｂは、増幅器１５から供給された線形和信号Ｓ６に基づいてＲＦＩＤ装置９のタッチパネル１への近接、及び、近接したＲＦＩＤ装置９のタッチパネル１上の位置を検出する。 In the RFID device detection period T2, the drive circuit 17a applies the touch panel transmitter signal S2 to each of the plurality of drive electrodes 4. Next, a linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4, and the proximity sense electrode signal S4 flows due to the proximity of the touch sense electrode 5 and the RFID device 9. The amplifier 15 reads and amplifies the linear sum signal S6 affected by the change in the coupling charge with the proximity sense electrode 7 along the plurality of touch sense electrodes 5, and supplies the amplified signal to the detection circuit 17b of the touch panel controller 17. Thereafter, the detection circuit 17b detects the proximity of the RFID device 9 to the touch panel 1 and the position of the adjacent RFID device 9 on the touch panel 1 based on the linear sum signal S6 supplied from the amplifier 15.
　このように、タッチセンス電極５からは、指等のタッチ対象物のタッチに基づく線形和信号Ｓ５、及び、ＲＦＩＤ装置９の近接に基づく線形和信号Ｓ６が読み出される。そして、ＲＦＩＤ装置９がタッチパネル１に近接すると、タッチパネルコントローラ１７はＲＦＩＤ装置９のタッチパネル１への近接、及び、近接したＲＦＩＤ装置９のタッチパネル１上の位置を検出する。 Thus, from the touch sense electrode 5, the linear sum signal S5 based on the touch of the touch object such as a finger and the linear sum signal S6 based on the proximity of the RFID device 9 are read out. When the RFID device 9 comes close to the touch panel 1, the touch panel controller 17 detects the proximity of the RFID device 9 to the touch panel 1 and the position of the close RFID device 9 on the touch panel 1.
　図７（ａ）はタッチパネル１に設けられたタッチセンス電極５を囲むように配置された近接センス電極７の動作を説明するための模式図であり、（ｂ）はタッチパネル１に設けられた駆動電極４を囲むように配置された駆動層近接センス電極１９の動作を説明するための模式図である。図８は近接センス電極７、駆動層近接センス電極１９の動作を説明するためのタイミングチャートである。図９は、タッチパネルシステム１４の動作を説明するための模式図である。 FIG. 7A is a schematic diagram for explaining the operation of the proximity sense electrode 7 disposed so as to surround the touch sense electrode 5 provided on the touch panel 1, and FIG. 7B is a drive provided on the touch panel 1. FIG. 6 is a schematic diagram for explaining the operation of the drive layer proximity sense electrode 19 disposed so as to surround the electrode 4. FIG. 8 is a timing chart for explaining the operation of the proximity sense electrode 7 and the drive layer proximity sense electrode 19. FIG. 9 is a schematic diagram for explaining the operation of the touch panel system 14.
　図７（ａ）を参照すると、タッチセンス電極５を囲むようにＵ字形状に配置された近接センス電極７が、周波数変調器１８に接続される。周波数変調器１８は、ＲＦＩＤ送信器２３及びタッチパネルコントローラ１７に接続される。 Referring to FIG. 7A, the proximity sense electrode 7 arranged in a U shape so as to surround the touch sense electrode 5 is connected to the frequency modulator 18. The frequency modulator 18 is connected to the RFID transmitter 23 and the touch panel controller 17.
　タッチパネルコントローラ１７は、タッチ検出期間Ｔ１において、駆動電極４に駆動電圧信号Ｓ１を印加するとともに、ＲＦＩＤ装置検出期間Ｔ２において、駆動電極４にタッチパネルトランスミッター信号Ｓ２を印加する駆動回路１７ａを有する。 The touch panel controller 17 has a drive circuit 17a that applies the drive voltage signal S1 to the drive electrode 4 in the touch detection period T1 and applies the touch panel transmitter signal S2 to the drive electrode 4 in the RFID device detection period T2.
　タッチパネルコントローラ１７は、また、タッチ検出期間Ｔ１において、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５をタッチセンス電極５に沿って読み出してタッチ位置を検出すると共に、ＲＦＩＤ装置検出期間Ｔ２において、駆動電極４に印加されたタッチパネルトランスミッター信号Ｓ２に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、ＲＦＩＤ装置９の近接による近接センス電極７とタッチセンス電極５との間の結合電荷の変化による影響を受けた線形和信号Ｓ６をタッチセンス電極５に沿って読み出して増幅する増幅器１５から供給された線形和信号Ｓ６に基づいてＲＦＩＤ装置９の近接を検出する検出回路１７ｂを有する。 In the touch detection period T1, the touch panel controller 17 also reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the touch sense electrode 5, and touches the touch position. , And in the RFID device detection period T 2, a linear sum signal S 6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S 2 applied to the drive electrode 4, and the proximity sense electrode due to the proximity of the RFID device 9 RFID device based on the linear sum signal S6 supplied from the amplifier 15 that reads out and amplifies the linear sum signal S6 affected by the change in the combined charge between the touch sense electrode 5 and the touch sense electrode 5 along the touch sense electrode 5. 9 has a detection circuit 17b for detecting the proximity of 9.
　図７（ａ）及び図８を参照すると、ＲＦＩＤ装置検出期間Ｔ２において、ＲＦＩＤ送信器２３がメガヘルツオーダーのＲＦＩＤ信号Ｓ７を生成して周波数変調器１８に供給する。タッチパネルコントローラ１７は矩形状で１００ｋＨｚ前後の駆動信号Ｓ８を生成して周波数変調器１８に供給する。周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して近接センス電極７に供給する。 7A and 8, in the RFID device detection period T2, the RFID transmitter 23 generates an RFID signal S7 of megahertz order and supplies it to the frequency modulator 18. The touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18. The frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
　図７（ｂ）を参照すると、駆動電極４を囲むようにＵ字形状に配置された駆動層近接センス電極１９が、周波数変調器１８に接続される。周波数変調器１８は、ＲＦＩＤ送信器２３及びタッチパネルコントローラ１７に接続される。 Referring to FIG. 7B, the drive layer proximity sense electrode 19 disposed in a U shape so as to surround the drive electrode 4 is connected to the frequency modulator 18. The frequency modulator 18 is connected to the RFID transmitter 23 and the touch panel controller 17.
　タッチパネルコントローラ１７は、上記駆動回路１７ａと上記検出回路１７ｂとを有する。 The touch panel controller 17 includes the drive circuit 17a and the detection circuit 17b.
　図７（ｂ）及び図８を参照すると、周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して駆動層近接センス電極１９に供給する。 Referring to FIGS. 7B and 8, the frequency modulator 18 generates a modulation signal S9 in which the drive signal S8 supplied from the touch panel controller 17 is superimposed on the RFID signal S7 supplied from the RFID transmitter 23. The drive layer proximity sense electrode 19 is supplied.
　図９を参照すると、タッチセンス電極５を囲むようにＵ字形状に配置された近接センス電極７が、周波数変調器１８に接続される。周波数変調器１８は、ＲＦＩＤ送受信器２２及びタッチパネルコントローラ１７に接続される。 Referring to FIG. 9, the proximity sense electrode 7 arranged in a U shape so as to surround the touch sense electrode 5 is connected to the frequency modulator 18. The frequency modulator 18 is connected to the RFID transceiver 22 and the touch panel controller 17.
　タッチパネルコントローラ１７は、上記駆動回路１７ａと上記検出回路１７ｂとを有する。 The touch panel controller 17 includes the drive circuit 17a and the detection circuit 17b.
　図５、図８、及び図９を参照すると、ＲＦＩＤ装置検出期間Ｔ２において、タッチパネルコントローラ１７の駆動回路１７ａが、タッチパネルトランスミッター信号Ｓ２を駆動電極４に印加する。ＲＦＩＤ送信器２３はメガヘルツオーダーのＲＦＩＤ信号Ｓ７を生成して周波数変調器１８に供給する。タッチパネルコントローラ１７は矩形状で１００ｋＨｚ前後の駆動信号Ｓ８を生成して周波数変調器１８に供給する。周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して近接センス電極７に供給する。 Referring to FIG. 5, FIG. 8, and FIG. 9, the drive circuit 17a of the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4 in the RFID device detection period T2. The RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18. The touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18. The frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
　〔実施形態２〕
　本発明の他の実施形態について、図１０～図１１に基づいて説明すれば、以下のとおりである。なお、説明の便宜上、前記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。 [Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.
　図１０は実施形態２に係るタッチパネル１ａの構成を示す正面図である。コイル１０の近接を検出するために、コイル１０の共振周波数を有する複数個の駆動層近接センス電極１９を、各駆動電極４を囲むようにＵ字形状に駆動層２に形成してもよい。 FIG. 10 is a front view showing the configuration of the touch panel 1a according to the second embodiment. In order to detect the proximity of the coil 10, a plurality of drive layer proximity sense electrodes 19 having the resonance frequency of the coil 10 may be formed in the drive layer 2 in a U shape so as to surround each drive electrode 4.
　駆動層近接センス電極１９の共振周波数を定めるために駆動層近接センス電極１９の一端と他端とに接続される共振周波数コンデンサ１２が設けられる。図９に示す例では、上から奇数本目の駆動層近接センス電極１９に対応する共振周波数コンデンサ１２は右端に配置され、偶数本目の駆動層近接センス電極１９に対応する共振周波数コンデンサ１２は左端に配置される。このように、複数個の駆動層近接センス電極１９が、各駆動電極４に対応する位置にそれぞれ配置される。 In order to determine the resonance frequency of the drive layer proximity sense electrode 19, a resonance frequency capacitor 12 connected to one end and the other end of the drive layer proximity sense electrode 19 is provided. In the example shown in FIG. 9, the resonance frequency capacitor 12 corresponding to the odd-numbered drive layer proximity sense electrode 19 from the top is arranged at the right end, and the resonance frequency capacitor 12 corresponding to the even-number drive layer proximity sense electrode 19 is at the left end. Be placed. In this way, the plurality of drive layer proximity sense electrodes 19 are respectively arranged at positions corresponding to the drive electrodes 4.
　複数個の近接センス電極７が、各タッチセンス電極５に対応する位置にそれぞれ配置されることにより、近接したＲＦＩＤ装置９であるスタイラスペン２１のタッチパネル１ａ上のＸ方向の位置が検出される。そして、複数個の駆動層近接センス電極１９が、各駆動電極４に対応する位置にそれぞれ配置されることにより、スタイラスペン２１のＹ方向の位置が検出される。スタイラスペン２１はＮＦＣに関連するコイル１０を有する。複数個の近接センス電極７をＸ方向に適切な間隔で配置し、複数個の駆動層近接センス電極１９をＹ方向に適切な間隔で配置すると、ＮＦＣに関連するコイル１０を有するスタイラスペン２１を、正確に検出することができ、入力装置として使用することができる。 A plurality of proximity sense electrodes 7 are arranged at positions corresponding to the touch sense electrodes 5, respectively, so that the position in the X direction on the touch panel 1a of the stylus pen 21 which is the close RFID device 9 is detected. A plurality of drive layer proximity sense electrodes 19 are arranged at positions corresponding to the drive electrodes 4, whereby the position of the stylus pen 21 in the Y direction is detected. The stylus pen 21 has a coil 10 associated with NFC. When a plurality of proximity sense electrodes 7 are arranged at appropriate intervals in the X direction and a plurality of drive layer proximity sense electrodes 19 are arranged at appropriate intervals in the Y direction, a stylus pen 21 having a coil 10 related to NFC is provided. Can be detected accurately and can be used as an input device.
　図１１は、タッチパネル１が設けられたタッチパネルシステム１４を示す模式図である。タッチパネル１は、ＮＦＣ（Near Field Communication、近距離無線通信）機能を有するリング１４ａを装着した指１３と、ＮＦＣ機能を有するスタイラスペン２１とを検出する。リング１４ａは符号化されたＲＦＩＤ装置コイル信号Ｓ１０を発生する。スタイラスペン２１は符号化されたＲＦＩＤ装置コイル信号Ｓ１１を発生する。 FIG. 11 is a schematic diagram showing the touch panel system 14 provided with the touch panel 1. The touch panel 1 detects a finger 13 wearing a ring 14a having an NFC (Near Field Communication) function and a stylus pen 21 having an NFC function. Ring 14a generates an encoded RFID device coil signal S10. The stylus pen 21 generates an encoded RFID device coil signal S11.
　タッチパネルシステム１４は、複数の駆動電極４に駆動電圧を印加し、複数のタッチセンス電極５から線形和信号を読み出すタッチパネルコントローラ１７と、タッチパネルコントローラ１７に接続されたＲＦＩＤ受信器２４と、複数の近接センス電極７に接続された周波数変調器１８と、周波数変調器１８に接続されたＲＦＩＤ送信器２３とを備える。 The touch panel system 14 applies a drive voltage to the plurality of drive electrodes 4 and reads a linear sum signal from the plurality of touch sense electrodes 5, an RFID receiver 24 connected to the touch panel controller 17, and a plurality of proximity A frequency modulator 18 connected to the sense electrode 7 and an RFID transmitter 23 connected to the frequency modulator 18 are provided.
　図５、図８、及び図１１を参照すると、タッチ検出期間Ｔ１において、タッチパネルコントローラ１７が、複数の駆動電極４のそれぞれに駆動電圧信号Ｓ１を印加する。次に、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿ってタッチパネルコントローラ１７が読み出す。読み出された線形和信号Ｓ５に基づいてタッチパネル１へのタッチ対象物のタッチ位置をタッチパネルコントローラ１７が検出する。 Referring to FIG. 5, FIG. 8, and FIG. 11, in the touch detection period T1, the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4. Next, the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5. The touch panel controller 17 detects the touch position of the touch target on the touch panel 1 based on the read linear sum signal S5.
　ＲＦＩＤ装置検出期間Ｔ２において、タッチパネルコントローラ１７が、タッチパネルトランスミッター信号Ｓ２を駆動電極４に印加する。ＲＦＩＤ送信器２３はメガヘルツオーダーのＲＦＩＤ信号Ｓ７を生成して周波数変調器１８に供給する。タッチパネルコントローラ１７は矩形状で１００ｋＨｚ前後の駆動信号Ｓ８を生成して周波数変調器１８に供給する。周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して近接センス電極７に供給する。 In the RFID device detection period T2, the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4. The RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18. The touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18. The frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7.
　そして、ＲＦＩＤ装置コイル信号Ｓ１０を発生するリング１４ａが近接センス電極７に近づき、ＲＦＩＤ装置コイル信号Ｓ１１を発生するスタイラスペン２１が他の近接センス電極７に近づく。 Then, the ring 14a that generates the RFID device coil signal S10 approaches the proximity sense electrode 7, and the stylus pen 21 that generates the RFID device coil signal S11 approaches the other proximity sense electrode 7.
　次に、駆動電極４に印加されたタッチパネルトランスミッター信号Ｓ２、及び、近接センス電極７に供給された変調信号Ｓ９に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、タッチセンス電極５と、リング１４ａ及びスタイラスペン２１の近接により近接センス電極信号Ｓ４が流れる近接センス電極７との間の結合電荷の変化による影響を受けた線形和信号Ｓ６をタッチパネルコントローラ１７が複数のタッチセンス電極５に沿って読み出してＲＦＩＤ受信器２４に供給する。その後、ＲＦＩＤ受信器２４は、タッチパネルコントローラ１７から供給された線形和信号Ｓ６に基づいてリング１４ａ、スタイラスペン２１のタッチパネル１への近接、及び、近接したリング１４ａ、スタイラスペン２１のタッチパネル１上の位置を検出する。 Next, a linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4 and the modulation signal S9 supplied to the proximity sense electrode 7, and the touch sense electrode 5 The touch panel controller 17 outputs a linear sum signal S6 influenced by a change in the coupling charge between the ring 14a and the proximity sense electrode 7 through which the proximity sense electrode signal S4 flows due to the proximity of the ring 14a and the stylus pen 21. And read to the RFID receiver 24. Thereafter, the RFID receiver 24, based on the linear sum signal S <b> 6 supplied from the touch panel controller 17, approaches the ring 14 a and the stylus pen 21 to the touch panel 1, and the adjacent ring 14 a and the stylus pen 21 on the touch panel 1. Detect position.
　〔実施形態３〕
　図１２は、実施形態３に係るタッチパネル１ｂの構成を示す正面図である。タッチパネル１ｂは、略六角形状パターンがＸ方向に沿って繰り返して形成される複数の駆動電極４ｂが、Ｙ方向に一定の間隔を空けて駆動層２に配置される。そして、略菱形形状パターンがＹ方向に沿って繰り返して形成される複数のタッチセンス電極５ｂがＸ方向に一定の間隔を空けてセンス層３に配置される。 [Embodiment 3]
FIG. 12 is a front view illustrating the configuration of the touch panel 1b according to the third embodiment. In the touch panel 1b, a plurality of drive electrodes 4b formed by repeating a substantially hexagonal pattern along the X direction are arranged on the drive layer 2 with a certain interval in the Y direction. A plurality of touch sense electrodes 5b formed by repeating a substantially rhombic pattern along the Y direction are arranged on the sense layer 3 with a certain interval in the X direction.
　そして、各タッチセンス電極５ｂの一部である略菱形形状パターンを囲むように駆動層近接センス電極１９がＸ方向に沿って略ループ状に駆動層２に形成される。このように、ループ状の電極は、センス層３以外の駆動層２に形成されて、センス層３の各タッチセンス電極５ｂの一部を囲むように形成されてもよい。 Then, the drive layer proximity sense electrode 19 is formed in the drive layer 2 in a substantially loop shape along the X direction so as to surround a substantially rhombic pattern that is a part of each touch sense electrode 5b. Thus, the loop-shaped electrode may be formed on the drive layer 2 other than the sense layer 3 so as to surround a part of each touch sense electrode 5b of the sense layer 3.
　〔実施形態４〕
　図１３は実施形態４に係るタッチパネル１ｃの構成を示す正面図である。タッチパネル１ｃには、各タッチセンス電極５を囲むように配置された複数の近接センス電極７をさらに囲むようにＵ字状に配置された近接センス電極７ａが設けられている。近接センス電極７ａの共振周波数を定めるために近接センス電極７ａの一端と他端とに接続される共振周波数コンデンサ８ａが設けられる。 [Embodiment 4]
FIG. 13 is a front view showing the configuration of the touch panel 1c according to the fourth embodiment. The touch panel 1c is provided with proximity sense electrodes 7a arranged in a U shape so as to further surround a plurality of proximity sense electrodes 7 arranged so as to surround each touch sense electrode 5. In order to determine the resonance frequency of the proximity sense electrode 7a, a resonance frequency capacitor 8a connected to one end and the other end of the proximity sense electrode 7a is provided.
　図１４はタッチパネル１ｃが設けられたタッチパネルシステム１４ｃを示す模式図である。タッチパネルシステム１４ｃは、複数の駆動電極４に駆動電圧信号Ｓ１を印加し、複数のタッチセンス電極５から線形和信号Ｓ５を読み出すタッチパネルコントローラ１７と、近接センス電極７ａに接続された周波数変調器１８と、周波数変調器１８に接続されたＲＦＩＤ送受信器２２とを有する。 FIG. 14 is a schematic diagram showing a touch panel system 14c provided with a touch panel 1c. The touch panel system 14c applies a driving voltage signal S1 to the plurality of driving electrodes 4, reads the linear sum signal S5 from the plurality of touch sensing electrodes 5, and a frequency modulator 18 connected to the proximity sensing electrode 7a. And an RFID transceiver 22 connected to the frequency modulator 18.
　ＲＦＩＤが埋め込まれたメモリ付きスタイラスペン２１が、磁気結合により検出される。指１３とＲＦＩＤ装置であるスタイラスペン２１とは、異なる周波数が使用されるため、識別することができる。手のひらをついたお手付き領域を除外することも良好に実施することができる。また、ＲＦＩＤ装置の近接と位置を検出することができる。 The stylus pen with memory 21 in which the RFID is embedded is detected by magnetic coupling. Since the finger 13 and the stylus pen 21 that is the RFID device use different frequencies, they can be identified. Excluding the handed area with the palm can also be performed well. In addition, the proximity and position of the RFID device can be detected.
　図５、図８、及び図１４を参照すると、タッチ検出期間Ｔ１において、タッチパネルコントローラ１７が、複数の駆動電極４のそれぞれに駆動電圧信号Ｓ１を印加する。次に、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿ってタッチパネルコントローラ１７が読み出す。読み出された線形和信号Ｓ５に基づいてタッチパネル１へのタッチ対象物である指１３のタッチ位置をタッチパネルコントローラ１７が検出する。 Referring to FIG. 5, FIG. 8, and FIG. 14, the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4 in the touch detection period T1. Next, the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5. Based on the read linear sum signal S5, the touch panel controller 17 detects the touch position of the finger 13 that is a touch object on the touch panel 1.
　そして、ＲＦＩＤ装置検出期間Ｔ２において、タッチパネルコントローラ１７が、タッチパネルトランスミッター信号Ｓ２を駆動電極４に印加する。ＲＦＩＤ送受信器２２はメガヘルツオーダーのＲＦＩＤ信号Ｓ７を生成して周波数変調器１８に供給する。タッチパネルコントローラ１７は矩形状で１００ｋＨｚ前後の駆動信号Ｓ８を生成して周波数変調器１８に供給する。周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して近接センス電極７ａに供給する。 In the RFID device detection period T2, the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4. The RFID transceiver 22 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18. The touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18. The frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7a.
　そして、ＲＦＩＤ装置検出期間Ｔ２において、タッチパネルコントローラ１７が複数の駆動電極４のそれぞれにタッチパネルトランスミッター信号Ｓ２を印加する。次に、スタイラスペン２１が、コイル信号Ｓ３を放射しながらタッチパネル１ｃの近接センス電極７ａに近接すると、近接センス電極７とスタイラスペン２１の近接により近接センス電極信号Ｓ４が流れる近接センス電極７ａとの間の結合電荷の変化に基づく信号をタッチパネルコントローラ１７が各近接センス電極７から読み出す。その後、タッチパネルコントローラ１７は、近接センス電極７から読み出した信号に基づいて、スタイラスペン２１のタッチパネル１ｃへの近接、及び、近接したスタイラスペン２１のタッチパネル１ｃ上の位置を検出する。 In the RFID device detection period T2, the touch panel controller 17 applies the touch panel transmitter signal S2 to each of the plurality of drive electrodes 4. Next, when the stylus pen 21 approaches the proximity sense electrode 7a of the touch panel 1c while emitting the coil signal S3, the proximity sense electrode 7 and the proximity sense electrode 7a through which the proximity sense electrode signal S4 flows due to the proximity of the stylus pen 21 are detected. The touch panel controller 17 reads a signal based on the change in the coupled charge between the proximity sense electrodes 7. Thereafter, the touch panel controller 17 detects the proximity of the stylus pen 21 to the touch panel 1 c and the position of the adjacent stylus pen 21 on the touch panel 1 c based on the signal read from the proximity sense electrode 7.
　〔実施形態５〕
　図１５は実施形態５に係るタッチパネルシステムを示す模式図である。なお、説明の便宜上、既に説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。 [Embodiment 5]
FIG. 15 is a schematic diagram illustrating a touch panel system according to the fifth embodiment. For convenience of explanation, members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
　駆動電極４を囲むようにＵ字状に配置された駆動層近接センス電極１９が設けられる。駆動層近接センス電極１９の一端及び他端に、駆動層近接センス電極１９の共振周波数を定めるための共振周波数コンデンサ１２が設けられる。駆動層近接センス電極１９に周波数変調器１８が接続される。周波数変調器１８にＮＦＣ送信器２５が接続される。 A drive layer proximity sense electrode 19 arranged in a U shape so as to surround the drive electrode 4 is provided. A resonance frequency capacitor 12 for determining a resonance frequency of the drive layer proximity sense electrode 19 is provided at one end and the other end of the drive layer proximity sense electrode 19. A frequency modulator 18 is connected to the drive layer proximity sense electrode 19. An NFC transmitter 25 is connected to the frequency modulator 18.
　互いに隣接するタッチセンス電極５に差動増幅器１５ａが接続される。差動増幅器１５ａの一方の入力と一方の出力との間に積分容量１６とスイッチ２７とが互いに並列に配置される。差動増幅器１５ａの他方の入力と他方の出力との間に積分容量１６とスイッチ２７とが互いに並列に配置される。 The differential amplifier 15a is connected to the touch sense electrodes 5 adjacent to each other. An integration capacitor 16 and a switch 27 are arranged in parallel between one input and one output of the differential amplifier 15a. An integration capacitor 16 and a switch 27 are arranged in parallel between the other input and the other output of the differential amplifier 15a.
　差動増幅器１５ａの出力はＡＤＣ２８とＲＦＩＤ受信器２４とに供給される。差動増幅器１５ａとＲＦＩＤ受信器２４との間に一対のスイッチ２９が設けられる。 The output of the differential amplifier 15 a is supplied to the ADC 28 and the RFID receiver 24. A pair of switches 29 are provided between the differential amplifier 15 a and the RFID receiver 24.
　実施形態５に係るタッチパネルシステムは、タッチ検出モードΦ（１）とＮＦＣ検出モードΦ（２）とを有する。タッチ検出モードΦ（１）では、スイッチ２７とスイッチ２９がオフとなり、タッチパネルコントローラ１７はタッチ対象物の位置を検出する。ＮＦＣ検出モードΦ（２）では、スイッチ２７とスイッチ２９がオンとなる。そして、タッチパネルコントローラ１７がリセットされ、差動増幅器１５ａがＮＦＣ受信器２６に接続されて、ＲＦＩＤ受信器２４がＲＦＩＤ装置９の近接を検出する。 The touch panel system according to Embodiment 5 has a touch detection mode Φ (1) and an NFC detection mode Φ (2). In the touch detection mode Φ (1), the switch 27 and the switch 29 are turned off, and the touch panel controller 17 detects the position of the touch target. In the NFC detection mode Φ (2), the switch 27 and the switch 29 are turned on. Then, the touch panel controller 17 is reset, the differential amplifier 15a is connected to the NFC receiver 26, and the RFID receiver 24 detects the proximity of the RFID device 9.
　〔実施形態６〕
　図１６は、実施形態６に係るタッチパネルシステムを示す模式図である。なお、説明の便宜上、既に説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。 [Embodiment 6]
FIG. 16 is a schematic diagram illustrating a touch panel system according to the sixth embodiment. For convenience of explanation, members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
　各タッチセンス電極５を囲むようにＵ字状に複数の近接センス電極７が形成される。各近接センス電極７の一端及び他端に、近接センス電極７の共振周波数を定めるための共振周波数コンデンサ８が設けられる。 A plurality of proximity sense electrodes 7 are formed in a U shape so as to surround each touch sense electrode 5. A resonance frequency capacitor 8 for determining the resonance frequency of the proximity sense electrode 7 is provided at one end and the other end of each proximity sense electrode 7.
　複数の近接センス電極７をさらに囲むようにＵ字状に近接センス電極７ａが配置される。近接センス電極７ａにＮＦＣ送信器２５が接続される。 A proximity sense electrode 7 a is arranged in a U shape so as to further surround the plurality of proximity sense electrodes 7. An NFC transmitter 25 is connected to the proximity sense electrode 7a.
　互いに隣接するタッチセンス電極５に差動増幅器１５ａが接続される。差動増幅器１５ａの一方の入力と一方の出力との間に積分容量１６とスイッチ２７とが互いに並列に配置される。差動増幅器１５ａの他方の入力と他方の出力との間に積分容量１６とスイッチ２７とが互いに並列に配置される。 The differential amplifier 15a is connected to the touch sense electrodes 5 adjacent to each other. An integration capacitor 16 and a switch 27 are arranged in parallel between one input and one output of the differential amplifier 15a. An integration capacitor 16 and a switch 27 are arranged in parallel between the other input and the other output of the differential amplifier 15a.
　差動増幅器１５ａの出力はＡＤＣ２８とＮＦＣ受信器２６とに供給される。差動増幅器１５ａとＮＦＣ受信器２６の間に一対のスイッチ２９が設けられる。ＡＤＣ２８にタッチパネルコントローラ１７が接続される。 The output of the differential amplifier 15a is supplied to the ADC 28 and the NFC receiver 26. A pair of switches 29 are provided between the differential amplifier 15 a and the NFC receiver 26. The touch panel controller 17 is connected to the ADC 28.
　ＮＦＣ送信器２５はタッチパネルコントローラ１７と同期して動作する。ＮＦＣ受信器２６は、タッチパネルのリセット期間の間に作動する。 The NFC transmitter 25 operates in synchronization with the touch panel controller 17. The NFC receiver 26 operates during the touch panel reset period.
　実施形態６に係るタッチパネルシステムは、実施形態５と同様に、タッチ検出モードΦ（１）とＮＦＣ検出モードΦ（２）２とを有する。タッチ検出モードΦ（１）では、スイッチ２７とスイッチ２９がオフとなり、タッチパネルコントローラ１７はタッチ対象物の位置を検出する。ＮＦＣ検出モードΦ（２）では、スイッチ２７とスイッチ２９がオンとなる。そして、タッチパネルコントローラ１７がリセットされ、差動増幅器１５ａがＮＦＣ受信器２６に接続されて、ＲＦＩＤ受信器２４がＲＦＩＤ装置９の近接を検出する。 The touch panel system according to the sixth embodiment has a touch detection mode Φ (1) and an NFC detection mode Φ (2) 2 as in the fifth embodiment. In the touch detection mode Φ (1), the switch 27 and the switch 29 are turned off, and the touch panel controller 17 detects the position of the touch target. In the NFC detection mode Φ (2), the switch 27 and the switch 29 are turned on. Then, the touch panel controller 17 is reset, the differential amplifier 15a is connected to the NFC receiver 26, and the RFID receiver 24 detects the proximity of the RFID device 9.
　〔実施形態７〕
　図１７は、実施形態７に係るタッチパネルシステムを示す模式図である。なお、説明の便宜上、既に説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。 [Embodiment 7]
FIG. 17 is a schematic diagram illustrating a touch panel system according to the seventh embodiment. For convenience of explanation, members having the same functions as those already described are denoted by the same reference numerals and description thereof is omitted.
　タッチパネル１ｃに設けられた近接センス電極７ａにＲＦＩＤ送信器２３が接続される。複数の駆動電極４に駆動電圧信号Ｓ１を印加し、複数のタッチセンス電極５から線形和信号Ｓ５を読み出すタッチパネルコントローラ１７にＲＦＩＤ受信器２４が接続される。 The RFID transmitter 23 is connected to the proximity sense electrode 7a provided on the touch panel 1c. The RFID receiver 24 is connected to the touch panel controller 17 that applies the drive voltage signal S1 to the plurality of drive electrodes 4 and reads the linear sum signal S5 from the plurality of touch sense electrodes 5.
　図５、図８、及び図１７を参照すると、タッチ検出期間Ｔ１において、タッチパネルコントローラ１７が、複数の駆動電極４のそれぞれに駆動電圧信号Ｓ１を印加する。次に、駆動電極４に印加された駆動電圧信号Ｓ１に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿ってタッチパネルコントローラ１７が読み出す。読み出された線形和信号Ｓ５に基づいてタッチパネル１へのタッチ対象物である指１３のタッチ位置をタッチパネルコントローラ１７が検出する。 Referring to FIG. 5, FIG. 8, and FIG. 17, in the touch detection period T1, the touch panel controller 17 applies the drive voltage signal S1 to each of the plurality of drive electrodes 4. Next, the touch panel controller 17 reads the linear sum signal S5 derived from the charges of the plurality of capacitors based on the drive voltage signal S1 applied to the drive electrode 4 along the plurality of touch sense electrodes 5. Based on the read linear sum signal S5, the touch panel controller 17 detects the touch position of the finger 13 that is a touch object on the touch panel 1.
　ＲＦＩＤ装置検出期間Ｔ２において、タッチパネルコントローラ１７が、タッチパネルトランスミッター信号Ｓ２を駆動電極４に印加する。ＲＦＩＤ送信器２３はメガヘルツオーダーのＲＦＩＤ信号Ｓ７を生成して周波数変調器１８に供給する。タッチパネルコントローラ１７は矩形状で１００ｋＨｚ前後の駆動信号Ｓ８を生成して周波数変調器１８に供給する。周波数変調器１８は、タッチパネルコントローラ１７から供給された駆動信号Ｓ８にＲＦＩＤ送信器２３から供給されたＲＦＩＤ信号Ｓ７を重畳した変調信号Ｓ９を生成して近接センス電極７ａに供給する。 In the RFID device detection period T2, the touch panel controller 17 applies the touch panel transmitter signal S2 to the drive electrode 4. The RFID transmitter 23 generates a megahertz order RFID signal S 7 and supplies it to the frequency modulator 18. The touch panel controller 17 generates a drive signal S8 having a rectangular shape and around 100 kHz and supplies it to the frequency modulator 18. The frequency modulator 18 generates a modulation signal S9 obtained by superimposing the RFID signal S7 supplied from the RFID transmitter 23 on the drive signal S8 supplied from the touch panel controller 17, and supplies the modulation signal S9 to the proximity sense electrode 7a.
　そして、ＲＦＩＤ装置コイル信号Ｓ１０を発生するリング１４ａが近接センス電極７に近づき、ＲＦＩＤ装置コイル信号Ｓ１１を発生するスタイラスペン２１が他の近接センス電極７に近づく。 Then, the ring 14a that generates the RFID device coil signal S10 approaches the proximity sense electrode 7, and the stylus pen 21 that generates the RFID device coil signal S11 approaches the other proximity sense electrode 7.
　次に、駆動電極４に印加されたタッチパネルトランスミッター信号Ｓ２、及び、近接センス電極７ａに供給された変調信号Ｓ９に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、タッチセンス電極５と、リング１４ａ及びスタイラスペン２１の近接により近接センス電極信号Ｓ４が流れる近接センス電極７・７ａとの間の結合電荷の変化による影響を受けた線形和信号Ｓ６をタッチパネルコントローラ１７が複数のタッチセンス電極５に沿って読み出してＲＦＩＤ受信器２４に供給する。その後、ＲＦＩＤ受信器２４は、タッチパネルコントローラ１７から供給された線形和信号Ｓ６に基づいてリング１４ａ、スタイラスペン２１のタッチパネル１への近接、及び、近接したリング１４ａ、スタイラスペン２１のタッチパネル１上の位置を検出する。 Next, a linear sum signal S6 derived from the charges of a plurality of capacitors based on the touch panel transmitter signal S2 applied to the drive electrode 4 and the modulation signal S9 supplied to the proximity sense electrode 7a, the touch sense electrode 5 The touch panel controller 17 outputs a linear sum signal S6 affected by a change in the coupling charge between the proximity sense electrodes 7 and 7a through which the proximity sense electrode signal S4 flows due to the proximity of the ring 14a and the stylus pen 21. Read along the electrode 5 and supply to the RFID receiver 24. Thereafter, the RFID receiver 24, based on the linear sum signal S <b> 6 supplied from the touch panel controller 17, approaches the ring 14 a and the stylus pen 21 to the touch panel 1, and the adjacent ring 14 a and the stylus pen 21 on the touch panel 1. Detect position.
　〔実施形態８〕
　図１８は、実施形態８に係るタッチパネルが内蔵された液晶表示パネル３０の断面図である。液晶表示パネル３０は、回路基板３２と、回路基板３２に対向して配置される対向基板３３と、回路基板３２と対向基板３３との間に形成される液晶層５４とを備える。 [Embodiment 8]
FIG. 18 is a cross-sectional view of a liquid crystal display panel 30 with a built-in touch panel according to the eighth embodiment. The liquid crystal display panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33.
　回路基板３２は、ＴＦＴ（Thin Film Transistor、薄膜トランジスタ）基板４１を有する。ＴＦＴ基板４１は、液晶層５４側に形成されるＴＦＴゲートライン４２、ＴＦＴソースライン４３、ＴＨ層４４、及び複数の画素電極４８を有する。ＴＨ層４４にフォースシールドメタル４７が設けられる。ＴＦＴゲートライン４２、ＴＦＴソースライン４３、ＴＨ層４４は、画素電極４８をスイッチングするために設けられる。 The circuit board 32 includes a TFT (thin film transistor, thin film transistor) substrate 41. The TFT substrate 41 includes a TFT gate line 42, a TFT source line 43, a TH layer 44, and a plurality of pixel electrodes 48 formed on the liquid crystal layer 54 side. A force shield metal 47 is provided on the TH layer 44. The TFT gate line 42, the TFT source line 43, and the TH layer 44 are provided for switching the pixel electrode 48.
　ＴＦＴ基板４１の液晶層５４と反対側に偏光板４９、バックライトユニット５０、ＥＭＩ層６２が形成される。 A polarizing plate 49, a backlight unit 50, and an EMI layer 62 are formed on the side of the TFT substrate 41 opposite to the liquid crystal layer 54.
　対向基板３３は、ＣＦ（Color Filter、カラーフィルタ）基板５３を有する。ＣＦ基板５３は、液晶層５４側に形成されたカラーフィルタ６３と、ブラックマトリックス３９とを有する。 The counter substrate 33 has a CF (Color Filter) substrate 53. The CF substrate 53 includes a color filter 63 formed on the liquid crystal layer 54 side and a black matrix 39.
　液晶表示パネル３０には、対向基板３３に加わる圧力を検出する圧力センサ３５が設けられる。圧力センサ３５は、ブラックマトリックス３９に形成される駆動電極３６と、画素電極４８の液晶層５４側に形成されたセンス電極３７とを有する。このセンス電極３７は、液晶層５４に含まれる液晶分子の配向を制御する電界を形成するためにＴＦＴ基板４１に配置される共通電極と兼用される。 The liquid crystal display panel 30 is provided with a pressure sensor 35 that detects the pressure applied to the counter substrate 33. The pressure sensor 35 includes a drive electrode 36 formed on the black matrix 39 and a sense electrode 37 formed on the liquid crystal layer 54 side of the pixel electrode 48. The sense electrode 37 is also used as a common electrode disposed on the TFT substrate 41 in order to form an electric field that controls the orientation of the liquid crystal molecules contained in the liquid crystal layer 54.
　センス電極３７は、画素電極４８とＴＨ層４４との間に形成されたフォース受信配線４６と接続される。ＣＦ基板５３は、液晶層５４のセルの厚みを維持するために液晶層５４に向かって突出するように駆動電極３６に設けられるフォトスペーサ４０を有する。 The sense electrode 37 is connected to a force receiving wiring 46 formed between the pixel electrode 48 and the TH layer 44. The CF substrate 53 has a photo spacer 40 provided on the drive electrode 36 so as to protrude toward the liquid crystal layer 54 in order to maintain the cell thickness of the liquid crystal layer 54.
　ＣＦ基板５３の液晶層５４と反対側にタッチパネルのためのセンス電極３８が設けられる。センス電極３８の上に偏光板５１とカバーガラス５２とが形成される。 A sense electrode 38 for a touch panel is provided on the opposite side of the CF substrate 53 from the liquid crystal layer 54. A polarizing plate 51 and a cover glass 52 are formed on the sense electrode 38.
　液晶表示パネル３０は、対向基板３３へのタッチを検出するタッチパネルを備える。このタッチパネルは、駆動電極３６との間の静電容量に基づく信号を読み出すためにＣＦ基板５３の液晶層５４と反対側に形成されるセンス電極３８を有する。タッチパネルの駆動電極は駆動電極３６と兼用される。 The liquid crystal display panel 30 includes a touch panel that detects a touch on the counter substrate 33. This touch panel has a sense electrode 38 formed on the opposite side of the liquid crystal layer 54 of the CF substrate 53 in order to read a signal based on the electrostatic capacitance between the touch electrode 36 and the drive electrode 36. The drive electrode of the touch panel is also used as the drive electrode 36.
　このように、本実施形態に係るタッチパネルは、液晶表示パネル３０に内蔵され、駆動電極３６が形成される駆動層と、センス電極３８が形成されるセンス層とが、対向基板３３に形成される。上記センス層には、コイルの近接を検出するための近接センス電極（図示せず）がさらに形成される。近接センス電極は、透明なＩＴＯにより構成される。 As described above, the touch panel according to this embodiment is built in the liquid crystal display panel 30, and the drive layer in which the drive electrode 36 is formed and the sense layer in which the sense electrode 38 is formed are formed on the counter substrate 33. . A proximity sense electrode (not shown) for detecting the proximity of the coil is further formed on the sense layer. The proximity sense electrode is made of transparent ITO.
　センス電極３８はブラックマトリックス３９の下側に配置されてもよく、近接センス電極がブラックマトリックス３９によって覆われる位置に配置されてもよい。 The sense electrode 38 may be disposed below the black matrix 39 or may be disposed at a position where the proximity sense electrode is covered by the black matrix 39.
　駆動層とセンス層とは、回路基板３２に形成してもよい。また、駆動層とセンス層との一方を回路基板３２に形成し、他方を対向基板３３に形成してもよい。 The drive layer and the sense layer may be formed on the circuit board 32. Alternatively, one of the drive layer and the sense layer may be formed on the circuit board 32 and the other may be formed on the counter substrate 33.
　〔まとめ〕
　本発明の態様１に係るタッチパネル１・１ａ・１ｂ・１ｃは、第１方向に沿って駆動層２に形成される複数の駆動電極４・４ｂと、前記駆動電極４・４ｂと交差する第２方向に沿って前記駆動層２と絶縁されたセンス層３に形成される複数のタッチセンス電極５・５ｂとを備えたタッチパネル１・１ａ・１ｂ・１ｃであって、コイル１０の近接を検出するための近接センス電極７・７ａを前記センス層３に形成している。 [Summary]
The touch panels 1, 1 a, 1 b, and 1 c according to the first aspect of the present invention include a plurality of drive electrodes 4 and 4 b formed on the drive layer 2 along the first direction, and a second crossing the drive electrodes 4 and 4 b. A touch panel 1, 1 a, 1 b, 1 c including a plurality of touch sense electrodes 5, 5 b formed on the sense layer 3 that is insulated from the drive layer 2 along the direction, and detects the proximity of the coil 10. Proximity sense electrodes 7 and 7a are formed in the sense layer 3.
　上記の構成によれば、コイルの近接を検出するための近接センス電極が、タッチを検出するためのタッチパネルに設けられる。このため、コイルの近接を認識するための電極は、既存の部材であるタッチパネルに設けられるから、特許文献１のようにコイルの近接を認識するために新たな部材を追加して設ける必要が無くなる。この結果、材料コスト及び製造コストが増大することなく、コイルの近接を認識することができるタッチパネルを実現することができる。 According to the above configuration, the proximity sense electrode for detecting the proximity of the coil is provided on the touch panel for detecting the touch. For this reason, since the electrode for recognizing the proximity of the coil is provided on a touch panel that is an existing member, there is no need to additionally provide a new member to recognize the proximity of the coil as in Patent Document 1. . As a result, it is possible to realize a touch panel that can recognize the proximity of the coil without increasing the material cost and the manufacturing cost.
　本発明の態様２に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１において、前記コイルがＲＦＩＤ装置に設けられてもよい。 In the touch panel 1, 1 a, 1 b, and 1 c according to the aspect 2 of the present invention, the coil may be provided in the RFID device in the aspect 1.
　上記の構成によれば、ＲＦＩＤ装置の近接を検出することができる。 According to the above configuration, the proximity of the RFID device can be detected.
　本発明の態様３に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１または２において、前記近接センス電極７・７ａが、前記コイル１０の共振周波数を有するように形成されてもよい。 The touch panels 1, 1 a, 1 b, and 1 c according to aspect 3 of the present invention may be formed such that the proximity sense electrodes 7 and 7 a have the resonance frequency of the coil 10 in the above aspect 1 or 2.
　上記の構成によれば、コイルの近接により近接センス電極がコイルと共振する。このため、近接センス電極とタッチセンス電極との間の結合電荷が変化する。従って、複数のタッチセンス電極に沿って読み出される線形和信号が上記結合電荷の変化に応じて変化することにより、コイルの近接を検出することができる。 According to the above configuration, the proximity sense electrode resonates with the coil due to the proximity of the coil. For this reason, the combined charge between the proximity sense electrode and the touch sense electrode changes. Accordingly, the proximity of the coil can be detected by changing the linear sum signal read along the plurality of touch sense electrodes in accordance with the change in the combined charge.
　本発明の態様４に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から３のいずれか一態様において、前記近接センス電極７・７ａが前記タッチセンス電極５・５ｂを囲むように配置されてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to aspect 4 of the present invention is arranged such that the proximity sense electrodes 7, 7 a surround the touch sense electrodes 5, 5 b in any one of the aspects 1 to 3. May be.
　上記の構成によれば、タッチセンス電極を囲むように配置された近接センス電極がタッチセンス電極と静電結合され、コイルの近接により近接センス電極に生じた誘導電流の変化が、タッチセンス電極を流れる電流の変化を引き起こす。従って、タッチセンス電極を流れる電流を検出することにより、コイルの近接を検出することができる。 According to the above configuration, the proximity sense electrode arranged so as to surround the touch sense electrode is electrostatically coupled to the touch sense electrode, and a change in induced current generated in the proximity sense electrode due to the proximity of the coil causes the touch sense electrode to change. Causes a change in the flowing current. Therefore, the proximity of the coil can be detected by detecting the current flowing through the touch sense electrode.
　本発明の態様５に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から４のいずれか一態様において、前記近接センス電極７・７ａがＩＴＯ（酸化インジウムスズ）により構成されてもよい。 In the touch panel 1, 1a, 1b, 1c according to the fifth aspect of the present invention, the proximity sense electrodes 7, 7a may be made of ITO (indium tin oxide) in any one of the first to fourth aspects.
　上記の構成によれば、近接センス電極が透明になるため、タッチパネルに対応する表示装置の表示の視認性が向上する。 According to the above configuration, since the proximity sense electrode becomes transparent, display visibility of the display device corresponding to the touch panel is improved.
　本発明の態様６に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から５のいずれか一態様において、前記近接センス電極７・７ａがＵ字型形状を有し、前記近接センス電極７・７ａの共振周波数を定めるために前記近接センス電極７・７ａの一端と他端とに接続される共振周波数コンデンサ８・８ａをさらに備えてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to aspect 6 of the present invention is the touch panel 1, 1 a, 1 b, 1 c according to any one of the above aspects 1 to 5, wherein the proximity sense electrodes 7, 7 a have a U-shape, A resonance frequency capacitor 8 or 8a connected to one end and the other end of the proximity sense electrode 7 or 7a may be further provided to determine the resonance frequency of 7a.
　上記の構成によれば、共振周波数コンデンサの静電容量により、コイルと共振する近接センス電極の共振周波数を定めることができる。 According to the above configuration, the resonance frequency of the proximity sense electrode that resonates with the coil can be determined by the capacitance of the resonance frequency capacitor.
　本発明の態様７に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から６のいずれか一態様において、前記近接センス電極７が複数個形成され、前記複数個の近接センス電極７が、各タッチセンス電極５に対応する位置にそれぞれ配置されてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to aspect 7 of the present invention is the touch panel 1, 1 a, 1 b, 1 c according to any one of the aspects 1 to 6, wherein a plurality of the proximity sense electrodes 7 are formed, and the plurality of proximity sense electrodes 7 are It may be arranged at a position corresponding to each touch sense electrode 5.
　上記の構成によれば、タッチパネルに近接するコイルのタッチセンス電極に垂直な方向の位置を検出することができる。 According to the above configuration, the position in the direction perpendicular to the touch sense electrode of the coil close to the touch panel can be detected.
　本発明の態様８に係るタッチパネル１ａ・１ｂは、上記態様１から６のいずれか一態様において、前記コイル１０の近接を検出するために、前記コイル１０の共振周波数を有するように前記駆動層２に形成された複数個の駆動層近接センス電極１９をさらに備え、前記複数個の駆動層近接センス電極１９が、各駆動電極４ｂに対応する位置にそれぞれ配置されてもよい。 In any one of the above aspects 1 to 6, the touch panel 1a, 1b according to aspect 8 of the present invention has the resonance frequency of the coil 10 so as to have the resonance frequency of the coil 10 in order to detect the proximity of the coil 10. The plurality of drive layer proximity sense electrodes 19 may be further provided, and the plurality of drive layer proximity sense electrodes 19 may be disposed at positions corresponding to the drive electrodes 4b.
　上記の構成によれば、タッチパネルに近接するコイルの駆動電極に垂直な方向の位置を検出することができる。 According to the above configuration, it is possible to detect the position in the direction perpendicular to the drive electrode of the coil close to the touch panel.
　本発明の態様９に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から６のいずれか一態様において、前記タッチパネル１・１ａ・１ｂ・１ｃへのタッチを検出するためのタッチ検出期間Ｔ１において、前記複数の駆動電極４・４ｂのそれぞれに駆動電圧が印加され、前記駆動電極４・４ｂに印加された駆動電圧に基づく複数のコンデンサの電荷に由来する線形和信号が複数のタッチセンス電極５・５ｂに沿って読み出され、前記コイル１０の近接を検出するためのコイル検出期間Ｔ２において、前記複数の駆動電極４・４ｂのそれぞれにコイル検出電圧（タッチパネルトランスミッター信号Ｓ２）が印加され、前記駆動電極４・４ｂに印加されたコイル検出電圧（タッチパネルトランスミッター信号Ｓ２）に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６が、前記コイル１０の近接による前記近接センス電極７と前記タッチセンス電極５との間の結合電荷の変化による影響を受けて、複数のタッチセンス電極５に沿って読み出されてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to aspect 9 of the present invention is the touch detection period T 1 for detecting a touch on the touch panel 1, 1 a, 1 b, 1 c in any one of the above aspects 1 to 6. A drive voltage is applied to each of the plurality of drive electrodes 4 and 4b, and a linear sum signal derived from charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes 4 and 4b is a plurality of touch sense electrodes. 5 and 5b, and a coil detection voltage (touch panel transmitter signal S2) is applied to each of the drive electrodes 4 and 4b in the coil detection period T2 for detecting the proximity of the coil 10; A plurality of capacitors based on the coil detection voltage (touch panel transmitter signal S2) applied to the drive electrodes 4 and 4b. The linear sum signal S6 derived from the electric charge of the first and second electrodes is affected by the change in the combined charge between the proximity sense electrode 7 and the touch sense electrode 5 due to the proximity of the coil 10, and along the plurality of touch sense electrodes 5. May be read out.
　上記の構成によれば、タッチ検出期間においてタッチを検出し、コイル検出期間においてコイルの近接を検出することができる。 According to the above configuration, a touch can be detected in the touch detection period, and the proximity of the coil can be detected in the coil detection period.
　本発明の態様１０に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から９のいずれか一態様において、前記タッチパネル１・１ａ・１ｂ・１ｃが液晶表示パネル３０に内蔵され、前記液晶表示パネル３０が、回路基板３２と、前記回路基板３２に対向して配置される対向基板３３と、前記回路基板３２と前記対向基板３３との間に形成される液晶層５４とを有し、前記駆動層２と前記センス層３とが前記回路基板３２に形成されてもよい。 The touch panel 1, 1a, 1b, 1c according to the tenth aspect of the present invention is the liquid crystal display panel 30 according to any one of the first to ninth aspects, wherein the touch panel 1, 1a, 1b, 1c is incorporated in the liquid crystal display panel 30. The panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33. The driving layer 2 and the sense layer 3 may be formed on the circuit board 32.
　上記の構成によれば、液晶表示パネルの回路基板にタッチパネルを内蔵することができる。 According to the above configuration, the touch panel can be built in the circuit board of the liquid crystal display panel.
　本発明の態様１１に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から９のいずれか一態様において、前記タッチパネル１・１ａ・１ｂ・１ｃが液晶表示パネル３０に内蔵され、前記液晶表示パネル３０が、回路基板３２と、前記回路基板３２に対向して配置される対向基板３３と、前記回路基板３２と前記対向基板３３との間に形成される液晶層５４とを有し、前記駆動層２が、前記回路基板３２と前記対向基板３３との一方に形成され、前記センス層３が、前記回路基板３２と前記対向基板３３との他方に形成されてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to the aspect 11 of the present invention is the liquid crystal display panel 30 according to any one of the aspects 1 to 9, wherein the touch panel 1, 1 a, 1 b, 1 c is incorporated in the liquid crystal display panel 30. The panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33. The driving layer 2 may be formed on one of the circuit board 32 and the counter substrate 33, and the sense layer 3 may be formed on the other of the circuit board 32 and the counter substrate 33.
　上記の構成によれば、液晶表示パネルの回路基板及び対向基板にタッチパネルを内蔵することができる。 According to the above configuration, the touch panel can be incorporated in the circuit substrate and the counter substrate of the liquid crystal display panel.
　本発明の態様１２に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から９のいずれか一態様において、前記タッチパネル１・１ａ・１ｂ・１ｃが液晶表示パネル３０に内蔵され、前記液晶表示パネル３０が、回路基板３２と、前記回路基板３２に対向して配置される対向基板３３と、前記回路基板３２と前記対向基板３３との間に形成される液晶層５４とを有し、前記駆動層２と前記センス層３とが前記対向基板３３に形成されてもよい。 The touch panel 1, 1 a, 1 b, 1 c according to the aspect 12 of the present invention is the liquid crystal display panel 30 according to any one of the above aspects 1 to 9, wherein the touch panel 1, 1 a, 1 b, 1 c is incorporated in the liquid crystal display panel 30. The panel 30 includes a circuit board 32, a counter substrate 33 disposed to face the circuit board 32, and a liquid crystal layer 54 formed between the circuit board 32 and the counter substrate 33. The driving layer 2 and the sense layer 3 may be formed on the counter substrate 33.
　上記の構成によれば、液晶表示パネルの対向基板にタッチパネルを内蔵することができる。 According to the above configuration, the touch panel can be built in the counter substrate of the liquid crystal display panel.
　本発明の態様１３に係るタッチパネル１・１ａ・１ｂ・１ｃは、上記態様１から１２のいずれか一態様において、前記コイル１０が、前記タッチパネル１・１ａ・１ｂ・１ｃに情報を入力するためのスタイラスペン２１に設けられてもよい。 The touch panel 1 · 1a · 1b · 1c according to the aspect 13 of the present invention is the touch panel 1 · 1a · 1b · 1c for inputting information to the touch panel 1 · 1a · 1b · 1c. The stylus pen 21 may be provided.
　上記の構成によれば、コイルが設けられたペンの近接を検出することができる。 According to the above configuration, the proximity of the pen provided with the coil can be detected.
　本発明の態様１４に係るタッチパネルシステム１４は、本発明の態様１から１３のいずれか一態様に係るタッチパネル１・１ａ・１ｂ・１ｃと、前記タッチパネル１・１ａ・１ｂ・１ｃを制御するコントローラ（タッチパネルコントローラ１７）とを備えるタッチパネルシステム１４であって、前記コントローラ（タッチパネルコントローラ１７）が、前記タッチパネル１・１ａ・１ｂ・１ｃへのタッチを検出するためのタッチ検出期間Ｔ１において、前記複数の駆動電極４・４ｂのそれぞれに駆動電圧（駆動電圧信号Ｓ１）を印加するとともに、前記コイル１０の近接を検出するためのコイル検出期間（ＲＦＩＤ装置検出期間Ｔ２）において、前記複数の駆動電極４・４ｂのそれぞれにコイル検出電圧（タッチパネルトランスミッター信号Ｓ２）を印加する駆動回路１７ａと、前記タッチ検出期間Ｔ１において、前記駆動電極４・４ｂに印加された駆動電圧（駆動電圧信号Ｓ１）に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ５を複数のタッチセンス電極５に沿って読み出してタッチ位置を検出すると共に、前記コイル検出期間（ＲＦＩＤ装置検出期間Ｔ２）において、前記駆動電極４・４ｂに印加されたコイル検出電圧（タッチパネルトランスミッター信号Ｓ２）に基づく複数のコンデンサの電荷に由来する線形和信号Ｓ６であって、前記コイル１０の近接による前記近接センス電極７・７ａと前記タッチセンス電極５との間の結合電荷の変化による影響を受けた線形和信号Ｓ６を複数のタッチセンス電極５に沿って読み出して前記コイル１０の近接を検出する検出回路１７ｂとを有し、前記近接センス電極７・７ａから前記コイル１０の共振周波数に基づく信号を受け取り、前記信号を周波数変調してＲＦＩＤ送受信器２２及び前記コントローラ（タッチパネルコントローラ１７）に供給する周波数変調器１８をさらに備える。 A touch panel system 14 according to an aspect 14 of the present invention includes a touch panel 1, 1a, 1b, 1c according to any one of the aspects 1 to 13 of the present invention and a controller that controls the touch panel 1, 1a, 1b, 1c ( A plurality of drives in a touch detection period T1 for the controller (touch panel controller 17) to detect a touch on the touch panel 1, 1a, 1b, 1c. While applying a drive voltage (drive voltage signal S1) to each of the electrodes 4 and 4b, and in the coil detection period (RFID device detection period T2) for detecting the proximity of the coil 10, the plurality of drive electrodes 4 and 4b Coil detection voltage (touch panel transmitter signal) A drive circuit 17a to which S2) is applied, and a linear sum signal S5 derived from charges of a plurality of capacitors based on the drive voltage (drive voltage signal S1) applied to the drive electrodes 4 and 4b in the touch detection period T1. Along with detecting the touch position by reading along the plurality of touch sense electrodes 5, the coil detection voltage (touch panel transmitter signal S2) applied to the drive electrodes 4 and 4b in the coil detection period (RFID device detection period T2). A linear sum signal S6 derived from the charges of a plurality of capacitors based on the above, and affected by the change in the combined charge between the proximity sense electrodes 7 and 7a and the touch sense electrode 5 due to the proximity of the coil 10 The linear sum signal S6 is read along the plurality of touch sense electrodes 5 to detect the proximity of the coil 10. A frequency that receives a signal based on the resonance frequency of the coil 10 from the proximity sense electrodes 7 and 7a and modulates the signal to supply it to the RFID transceiver 22 and the controller (touch panel controller 17). A modulator 18 is further provided.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。さらに、各実施形態にそれぞれ開示された技術的手段を組み合わせることにより、新しい技術的特徴を形成することができる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.
　１　タッチパネル
　２　駆動層
　３　センス層
　４　駆動電極
　５　タッチセンス電極
７、７ａ　近接センス電極
８、８ａ　共振周波数コンデンサ
　９　ＲＦＩＤ装置
１０　コイル
１２　共振周波数コンデンサ
１４　タッチパネルシステム
１７　タッチパネルコントローラ（コントローラ）
１８　周波数変調器
１９　駆動層近接センス電極
２１　スタイラスペン
３０　液晶表示パネル
３２　回路基板
３３　対向基板
５４　液晶層
Ｓ１　駆動電圧信号（駆動電圧）
Ｓ２　タッチパネルトランスミッター信号（コイル検出電圧）
Ｓ３　コイル信号
Ｓ４　近接センス電極信号
Ｓ５、Ｓ６　線形和信号
Ｔ１　タッチ検出期間
Ｔ２　ＲＦＩＤ装置検出期間（コイル検出期間） DESCRIPTION OF SYMBOLS 1 Touch panel 2 Drive layer 3 Sense layer 4 Drive electrode 5 Touch sense electrode 7, 7a Proximity sense electrode 8, 8a Resonance frequency capacitor 9 RFID apparatus 10 Coil 12 Resonance frequency capacitor 14 Touch panel system 17 Touch panel controller (controller)
18 Frequency Modulator 19 Drive Layer Proximity Sense Electrode 21 Stylus Pen 30 Liquid Crystal Display Panel 32 Circuit Board 33 Opposite Substrate 54 Liquid Crystal Layer S1 Drive Voltage Signal (Drive Voltage)
S2 Touch panel transmitter signal (coil detection voltage)
S3 Coil signal S4 Proximity sense electrode signal S5, S6 Linear sum signal T1 Touch detection period T2 RFID device detection period (coil detection period)

Claims (14)

  1. 　第１方向に沿って駆動層に形成される複数の駆動電極と、
    　前記駆動電極と交差する第２方向に沿って前記駆動層と絶縁されたセンス層に形成される複数のタッチセンス電極とを備えたタッチパネルであって、
    　コイルの近接を検出するための近接センス電極を前記センス層に形成したことを特徴とするタッチパネル。     A plurality of drive electrodes formed on the drive layer along the first direction;
    A touch panel comprising a plurality of touch sense electrodes formed in a sense layer insulated from the drive layer along a second direction intersecting the drive electrodes,
    A touch panel, wherein a proximity sense electrode for detecting proximity of a coil is formed in the sense layer.
  2. 　前記コイルがＲＦＩＤ装置に設けられる請求項１に記載のタッチパネル。 The touch panel according to claim 1, wherein the coil is provided in an RFID device.
  3. 　前記近接センス電極が、前記コイルの共振周波数を有するように形成される請求項１又は２に記載のタッチパネル。 The touch panel according to claim 1 or 2, wherein the proximity sense electrode is formed to have a resonance frequency of the coil.
  4. 　前記近接センス電極が前記タッチセンス電極を囲むように配置される請求項１から３のいずれか一項に記載のタッチパネル。 The touch panel according to any one of claims 1 to 3, wherein the proximity sense electrode is disposed so as to surround the touch sense electrode.
  5. 　前記近接センス電極がＩＴＯ（酸化インジウムスズ）により構成される請求項１から４のいずれか一項に記載のタッチパネル。 The touch panel according to any one of claims 1 to 4, wherein the proximity sense electrode is made of ITO (indium tin oxide).
  6. 　前記近接センス電極がＵ字型形状を有し、
    　前記近接センス電極の共振周波数を定めるために前記近接センス電極の一端と他端とに接続される共振周波数コンデンサをさらに備える請求項１から５のいずれか一項に記載のタッチパネル。     The proximity sense electrode has a U-shape;
    The touch panel according to any one of claims 1 to 5, further comprising a resonance frequency capacitor connected to one end and the other end of the proximity sense electrode to determine a resonance frequency of the proximity sense electrode.
  7. 　前記近接センス電極が複数個形成され、
    　前記複数個の近接センス電極が、各タッチセンス電極に対応する位置にそれぞれ配置される請求項１から６のいずれか一項に記載のタッチパネル。     A plurality of the proximity sense electrodes are formed;
    The touch panel according to claim 1, wherein the plurality of proximity sense electrodes are respectively arranged at positions corresponding to the touch sense electrodes.
  8. 　前記コイルの近接を検出するために、前記コイルの共振周波数を有するように前記駆動層に形成された複数個の駆動層近接センス電極をさらに備え、
    　前記複数個の駆動層近接センス電極が、各駆動電極に対応する位置にそれぞれ配置される請求項７に記載のタッチパネル。     In order to detect the proximity of the coil, further comprising a plurality of drive layer proximity sense electrodes formed on the drive layer to have a resonance frequency of the coil,
    The touch panel as set forth in claim 7, wherein the plurality of drive layer proximity sense electrodes are respectively arranged at positions corresponding to the drive electrodes.
  9. 　前記タッチパネルへのタッチを検出するためのタッチ検出期間において、前記複数の駆動電極のそれぞれに駆動電圧が印加され、前記駆動電極に印加された駆動電圧に基づく複数のコンデンサの電荷に由来する線形和信号が複数のタッチセンス電極に沿って読み出され、
    　前記コイルの近接を検出するためのコイル検出期間において、前記複数の駆動電極のそれぞれにコイル検出電圧が印加され、前記駆動電極に印加されたコイル検出電圧に基づく複数のコンデンサの電荷に由来する線形和信号が、前記コイルの近接による前記近接センス電極と前記タッチセンス電極との間の結合電荷の変化による影響を受けて、複数のタッチセンス電極に沿って読み出される請求項１から８のいずれか一項に記載のタッチパネル。     In a touch detection period for detecting a touch on the touch panel, a drive voltage is applied to each of the plurality of drive electrodes, and a linear sum derived from charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes. A signal is read along the plurality of touch sense electrodes,
    In the coil detection period for detecting the proximity of the coil, a coil detection voltage is applied to each of the plurality of drive electrodes, and the linearity is derived from the charges of the plurality of capacitors based on the coil detection voltage applied to the drive electrodes. 9. The sum signal is read out along a plurality of touch sense electrodes under the influence of a change in coupled charge between the proximity sense electrode and the touch sense electrode due to proximity of the coil. The touch panel according to one item.
  10. 　前記タッチパネルが液晶表示パネルに内蔵され、
    　前記液晶表示パネルが、回路基板と、前記回路基板に対向して配置される対向基板と、前記回路基板と前記対向基板との間に形成される液晶層とを有し、
    　前記駆動層と前記センス層とが前記回路基板に形成される請求項１から９のいずれか一項に記載のタッチパネル。     The touch panel is built in the liquid crystal display panel,
    The liquid crystal display panel includes a circuit board, a counter substrate disposed to face the circuit board, and a liquid crystal layer formed between the circuit board and the counter substrate.
    The touch panel according to claim 1, wherein the drive layer and the sense layer are formed on the circuit board.
  11. 　前記タッチパネルが液晶表示パネルに内蔵され、
    　前記液晶表示パネルが、回路基板と、前記回路基板に対向して配置される対向基板と、前記回路基板と前記対向基板との間に形成される液晶層とを有し、
    　前記駆動層が、前記回路基板と前記対向基板との一方に形成され、
    　前記センス層が、前記回路基板と前記対向基板との他方に形成される請求項１から９のいずれか一項に記載のタッチパネル。     The touch panel is built in the liquid crystal display panel,
    The liquid crystal display panel includes a circuit board, a counter substrate disposed to face the circuit board, and a liquid crystal layer formed between the circuit board and the counter substrate.
    The driving layer is formed on one of the circuit board and the counter substrate;
    The touch panel according to claim 1, wherein the sense layer is formed on the other of the circuit board and the counter substrate.
  12. 　前記タッチパネルが液晶表示パネルに内蔵され、
    　前記液晶表示パネルが、回路基板と、前記回路基板に対向して配置される対向基板と、前記回路基板と前記対向基板との間に形成される液晶層とを有し、
    　前記駆動層と前記センス層とが前記対向基板に形成される請求項１から９のいずれか一項に記載のタッチパネル。     The touch panel is built in the liquid crystal display panel,
    The liquid crystal display panel includes a circuit board, a counter substrate disposed to face the circuit board, and a liquid crystal layer formed between the circuit board and the counter substrate.
    The touch panel according to claim 1, wherein the driving layer and the sense layer are formed on the counter substrate.
  13. 　前記コイルが、前記タッチパネルに情報を入力するためのスタイラスペンに設けられる請求項１から１２のいずれか一項に記載のタッチパネル。 The touch panel according to any one of claims 1 to 12, wherein the coil is provided in a stylus pen for inputting information to the touch panel.
  14. 　請求項１から１３のいずれか一項に記載のタッチパネルと、
    　前記タッチパネルを制御するコントローラとを備えるタッチパネルシステムであって、
    　前記コントローラが、前記タッチパネルへのタッチを検出するためのタッチ検出期間において、前記複数の駆動電極のそれぞれに駆動電圧を印加するとともに、前記コイルの近接を検出するためのコイル検出期間において、前記複数の駆動電極のそれぞれにコイル検出電圧を印加する駆動回路と、
    　前記タッチ検出期間において、前記駆動電極に印加された駆動電圧に基づく複数のコンデンサの電荷に由来する線形和信号を複数のタッチセンス電極に沿って読み出してタッチ位置を検出すると共に、前記コイル検出期間において、前記駆動電極に印加されたコイル検出電圧に基づく複数のコンデンサの電荷に由来する線形和信号であって、前記コイルの近接による前記近接センス電極と前記タッチセンス電極との間の結合電荷の変化による影響を受けた線形和信号を複数のタッチセンス電極に沿って読み出して前記コイルの近接を検出する検出回路とを有し、
    　前記近接センス電極から前記コイルの共振周波数に基づく信号を受け取り、前記信号を周波数変調してＲＦＩＤ送受信器及び前記コントローラに供給する周波数変調器をさらに備えることを特徴とするタッチパネルシステム。     The touch panel according to any one of claims 1 to 13,
    A touch panel system comprising a controller for controlling the touch panel,
    In the touch detection period for the controller to detect a touch on the touch panel, the controller applies a driving voltage to each of the plurality of driving electrodes, and the coil detection period for detecting the proximity of the coil. A drive circuit for applying a coil detection voltage to each of the drive electrodes;
    In the touch detection period, linear position signals derived from the charges of a plurality of capacitors based on the drive voltage applied to the drive electrodes are read along the plurality of touch sense electrodes to detect a touch position, and the coil detection period A linear sum signal derived from the charge of a plurality of capacitors based on a coil detection voltage applied to the drive electrode, wherein the combined charge between the proximity sense electrode and the touch sense electrode due to the proximity of the coil A detection circuit that reads a linear sum signal affected by the change along a plurality of touch sense electrodes and detects the proximity of the coil;
    The touch panel system further comprising: a frequency modulator that receives a signal based on a resonance frequency of the coil from the proximity sense electrode, modulates the signal, and supplies the signal to the RFID transceiver and the controller.
PCT/JP2017/036425 2016-10-06 2017-10-06 Touch panel and touch panel system WO2018066685A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780062041.5A CN109791459B (en) 2016-10-06 2017-10-06 Touch panel and touch panel system
US16/339,009 US10795522B2 (en) 2016-10-06 2017-10-06 Touch panel and touch panel system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-198480 2016-10-06
JP2016198480 2016-10-06

Publications (1)

Publication Number Publication Date
WO2018066685A1 true WO2018066685A1 (en) 2018-04-12

Family

ID=61831048

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/036425 WO2018066685A1 (en) 2016-10-06 2017-10-06 Touch panel and touch panel system

Country Status (3)

Country Link
US (1) US10795522B2 (en)
CN (1) CN109791459B (en)
WO (1) WO2018066685A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112068738A (en) * 2020-09-07 2020-12-11 广东电力通信科技有限公司 Fixing structure of mesh enclosure decoration

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10802633B2 (en) * 2016-09-15 2020-10-13 Sharp Kabushiki Kaisha Display with built-in touch panel
KR102586437B1 (en) * 2018-06-15 2023-10-06 주식회사 엘엑스세미콘 Display driving device and display device including the same
KR102607494B1 (en) * 2018-07-06 2023-12-01 삼성디스플레이 주식회사 Input sensing unit and display device comprising the input sensing unit
CN109143702A (en) * 2018-08-31 2019-01-04 武汉华星光电技术有限公司 Touch-control display panel
KR20200142343A (en) * 2019-06-12 2020-12-22 주식회사 하이딥 Touch apparatus and touch detection method thereof
JP7445523B2 (en) * 2020-06-04 2024-03-07 ホシデン株式会社 capacitive sensor
KR20220008998A (en) * 2020-07-14 2022-01-24 삼성디스플레이 주식회사 Display device
KR20220045603A (en) 2020-10-05 2022-04-13 삼성디스플레이 주식회사 Electronic device
TWI813164B (en) * 2022-01-28 2023-08-21 義隆電子股份有限公司 Touch device and control system using the touch device
TWI800334B (en) * 2022-03-28 2023-04-21 友達光電股份有限公司 Touch apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003158713A (en) * 2001-11-21 2003-05-30 Omron Corp Apparatus and method for printing image, printing medium unit as well as program
JP2014164770A (en) * 2013-02-27 2014-09-08 Samsung Display Co Ltd Display device and method of driving display device
JP2014219959A (en) * 2013-04-30 2014-11-20 エルジー ディスプレイ カンパニー リミテッド Touch input system and method for detecting touch using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090231299A1 (en) 2002-09-16 2009-09-17 Taiguen Technology (Shen Zhen) Co., Ltd. Touch control display screen apparatus with a built-in electromagnetic induction layer of wire lattice
WO2008120200A2 (en) * 2007-03-29 2008-10-09 N-Trig Ltd. System and method for multiple object detection on a digitizer system
JP5094376B2 (en) * 2007-12-28 2012-12-12 株式会社ワコム Position detection device
US9389737B2 (en) * 2012-09-14 2016-07-12 Samsung Display Co., Ltd. Display device and method of driving the same in two modes
WO2015125170A1 (en) * 2014-02-18 2015-08-27 ニューコムテクノ株式会社 Pointed-to position detection device
JP6416687B2 (en) * 2015-04-17 2018-10-31 株式会社ジャパンディスプレイ Display device and touch detection device
US10802633B2 (en) * 2016-09-15 2020-10-13 Sharp Kabushiki Kaisha Display with built-in touch panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003158713A (en) * 2001-11-21 2003-05-30 Omron Corp Apparatus and method for printing image, printing medium unit as well as program
JP2014164770A (en) * 2013-02-27 2014-09-08 Samsung Display Co Ltd Display device and method of driving display device
JP2014219959A (en) * 2013-04-30 2014-11-20 エルジー ディスプレイ カンパニー リミテッド Touch input system and method for detecting touch using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112068738A (en) * 2020-09-07 2020-12-11 广东电力通信科技有限公司 Fixing structure of mesh enclosure decoration
CN112068738B (en) * 2020-09-07 2023-11-07 广东电力通信科技有限公司 Fixing structure of screen decorating part

Also Published As

Publication number Publication date
US20200042118A1 (en) 2020-02-06
CN109791459B (en) 2022-02-25
CN109791459A (en) 2019-05-21
US10795522B2 (en) 2020-10-06

Similar Documents

Publication Publication Date Title
WO2018066685A1 (en) Touch panel and touch panel system
KR101429925B1 (en) Input System
US7084933B2 (en) Touch panel for display device
KR102050444B1 (en) Touch input system and method for detecting touch using the same
KR101441396B1 (en) Input System and Method for Detecting Touch Using the Same
JP6336604B2 (en) Modulated power supply for reducing parasitic capacitance
US9639218B2 (en) Liquid crystal panel, display device and scanning method thereof
CN109690459B (en) Touch panel built-in display
CN108885513A (en) Power sensing in display stacking
US20140043284A1 (en) Display device with touch screen and method of driving the same
CN102209944A (en) Touch panel device, manufacturing method therefor, and display device
CN104679357A (en) Mixed type touch screen
KR20150019594A (en) Touch sensing display device
JP6205489B2 (en) Discriminator for touch sensor system and touch sensor system
KR102273683B1 (en) Flat panel display device using stalus pen
US9715312B2 (en) Input device having anti-static layer bypass
KR102153915B1 (en) Touch Screen Display Device with Input System
TWM484751U (en) Capacitive touch panel
KR102081108B1 (en) Detecting Touch of Input System and Touch Controller for the Same
US20150091840A1 (en) Far-field sensing with a display device having an integrated sensing device
CN105930005B (en) A kind of touch device
TWI524249B (en) Capacitive touch panel
TWM649098U (en) Touch display device
KR20220117780A (en) Electronic device using magnetic field coupling, touch system including electronic device, and operation method thereof
KR101581412B1 (en) Digitizer

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17858521

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17858521

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP